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Finding Aid to the George Davidson papers, 1845-1911
BANC MSS C-B 490  
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Collection Details
 
Table of contents What's This?
  • Collection Summary
  • Information for Researchers
  • Biography
  • Scope and Content
  • Partial List of Correspondents

  • Collection Summary

    Collection Title: George Davidson Papers
    Date (inclusive): 1845-1911
    Collection Number: BANC MSS C-B 490
    Creator: Davidson, George, 1825-1911
    Extent: Number of containers: 69 boxes, 27 cartons, 3 volumes, 1 oversize package, 11 oversize folders, 1 oversize portfolio. Linear feet: circa 65.
    Repository: The Bancroft Library
    Berkeley, California 94720-6000
    Physical Location: For current information on the location of these materials, please consult the Library's online catalog.
    Abstract: Letters, including family correspondence; diaries; personalia; financial papers; manuscripts of his writings and speeches; notebooks; lecture notes; computations and drawings; subject files; photographs; reports; sketches; maps; clippings. Service with the U.S. Coast and Geodetic Service and with various commissions, governmental and private; interests in science, engineering, geography and navigation, history of California, etc.; association with the University of California as Regent and as professor. Included also: some papers of his wife and children, and papers relating to his wife's family (Fauntleroy family and Owen family).
    Languages Represented: English

    Information for Researchers

    Access

    Collection is open for research except for Cartons 23 and 29 which are unarranged and unavailable for use. Inquiries concerning these materials should be directed, in writing, to the Head of the Public Services of The Bancroft Library.

    Publication Rights

    Materials in this collection may be protected by the U.S. Copyright Law (Title 17, U.S.C.). In addition, the reproduction of some materials may be restricted by terms of University of California gift or purchase agreements, donor restrictions, privacy and publicity rights, licensing and trademarks. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user.
    All requests to reproduce, publish, quote from, or otherwise use collection materials must be submitted in writing to the Head of Public Services, The Bancroft Library, University of California, Berkeley 94720-6000. See: http://bancroft.berkeley.edu/reference/permissions.html .

    Preferred Citation

    [Identification of item], George Davidson papers, BANC MSS C-B 490, The Bancroft Library, University of California, Berkeley.

    Removed or Separated Material

    • Contents of carton 24 transferred to the map and the Pictorial Collections of The Bancroft Library.
    • Photographs - Transferred to Pictorial Collections - BANC PIC 1946.008
    • Photo album of the Alaska Boundary Survey cataloged as BANC PIC 1946.006
    • Sketches cataloged as BANC PIC 1946.004--A
    • Portrait of George Davidson cataloged as BANC PIC 1946.003--FR

    Indexing Terms

    The following terms have been used to index the description of this collection in the library's online public access catalog.
    Davidson, George, 1825-1911--Archives
    University of California, Berkeley
    Geodesy
    Astronomy
    Geography
    Navigation
    Engineering
    Faculty papers.

    Biography

    George Davidson - geodesist, astronomer, geographer and engineer - was born in Nottingham, England, on May 9, 1825. In 1832 he came to the United States with his parents, who settled in Pennsylvania. Upon graduation from Central High School, Philadelphia, he was appointed magnetic observer at Girard College Observatory.
    In 1845 he began his career with the United States Coast Survey as clerk to Superintendent Alexander D. Bache. Requesting duty in the field in 1846, he spent the next four years almost constantly on the move. He was sent to California in 1850, in charge of the party that was to survey the Pacific Coast, and, with the exception of the period from 1860-1866, he spent the rest of his years in the West. His great work, the study and survey of the California and Pacific Northwest Coast, was embodied in the many Coast and Geodetic Survey charts and in the Coast pilots.
    At the outset of the Civil War, he was assigned to the Atlantic Coast, where he assisted in fortifications for the defense of Philadelphia, and was detailed for special naval service along the Florida coast. Before returning to the West Coast, he undertook two important assignments in 1867--the survey of the Isthmus of Darien to determine the feasibility of a canal and the preliminary geographical reconnaissance of Alaska.
    In 1868 Davidson was placed in general charge of the Coast Survey work on the Pacific Coast, a position he retained until June 1895. His reputation in the scientific world was such that he was frequently called to serve upon commissions (the Irrigation Commission of California in 1873, the Mississippi River Commission in 1888, the Advisory Harbor Improvement Commission for San Francisco, and the United States Assay Commissions of 1872 and 1884) and was appointed member in charge of the American Transit of Venus Expedition to Japan in 1874 and a delegate to the International Geodetic Convention at Paris in 1889. He served as president of the California Academy of Sciences and the Geographical Society of the Pacific, and was an acknowledged authority on the early history of the Pacific Coast. It was largely through his influence that James Lick decided to build and endow the Lick Observatory. Davidson's own private observatory in Lafayette Park, San Francisco, was one of the first in California, and he made its facilities available to fellow scientists and interested laymen.
    Davidson was closely identified with the University of California, serving as honorary professor of geodesy and astronomy from 1870, as a regent, 1877-1884, and as professor of geography, 1895-1905. On June 30, 1905, he retired from active teaching, and devoted increasing time to his studies on early Pacific Coast navigation despite his failing eyesight. He died on December 2, 1911.

    Scope and Content

    The Davidson collection was given to the University of California by Miss Ellinor Davidson, his daughter, in 1945. A portion of it - some books, pamphlets and maps - came to the Bancroft Library in 1947, and his personal papers, in 1953. The papers consist of letters (personal and official Coast and Geodetic Survey correspondence); letterbooks; diaries; biographical sketches; personalia; clippings; financial records; manuscripts of his writings, published and unpublished; notebooks; lecture notes for his geography course; computations and work sheets; subject files; photographs; sketches; maps; transcripts and translations of reports and documents dealing with a wide variety of subjects; miscellaneous reports and papers; and printed material. Most of the books, pamphlets and other printed material have been cataloged separately. Cards for these are on file, as a unit, in the manuscripts collections of The Bancroft Library. Portrait photographs removed from the papers have been cataloged in the portrait file.
    Included also with the collection are papers of his wife, Ellinor (Fauntleroy) Davidson; his children, Ellinor, George and Thomas; and papers of and relating to the Fauntleroy and Owen families.
    Lists of major correspondents in the collection follow below. A key to arrangement, which describes the papers in greater detail, is also included herein.

    Partial List of Correspondents

    George Davidson's General Correspondence

    • A Miscellany (single letter)
      • Aiken, Charles Sedgwick, 1863-1911
        • Dec. 31, 1906
      • Aldrich, Richard, 1863-1937
        • Aug. 25, 1900
      • Amundsen, Leon [brother of Roald Amundsen]
        • Nov. 20, 1907
      • Anderson, Sir John
        • Jan. 24, 1882
      • Armes, William Dallam, 1860-1918
        • [ca.] Nov. 22, 1907
      • Atherton, Gertrude Franklin (Horn), 1857-1948
        • June 4, 1906
      • Avery, Benjamin Parke, 1829-1875
        • Mar. 2, 1874
    • Abbadie, Antoine-Thomson d', 1810-
      • 6 letters, 1889-1894
    • Abbe, Cleveland, 1838-1916
      • 2 letters, 1904. One is addressed to Alexander G. McAdie.
    • Academy of Natural Sciences of Philadelphia
      • 18 letters, 1868-1893. Many from Edward D. Cope.
    • Academy of Pacific Coast History, Berkeley, Calif.
      • 8 letters, 1908-1911. From Porter Garnett.
    • Adams, Charles Francis, 1835-1915
      • 2 letters, 1904
    • Adams, Ephraim Douglas, 1865-1930
      • 2 letters, 1911
    • Agassiz, Alexander, 1835-1910
      • 15 letters, 1864-1906
    • Agassiz, Elizabeth Cabot (Cary), 1822-1907 [Mrs. Louis Agassiz]
      • 2 letters, undated
    • Agassiz, Louis, 1807-1873
      • Letter & telegram, 1872-1873. Telegram is a copy addressed to Secretary of the Treasury. Letter is a recommendation for Gustaf Eisen.
    • Alaska Commercial Company
      • 13 letters, 1877-1909
    • Alaska Geographical Society
      • 3 letters, 1898-1901
    • Albrecht, Theodor, 1843-1915
      • 5 letters, 1894-1909. In German.
    • Alden, James See Coast & Geodetic Survey correspondence list.
    • Aldrich, William A.
      • 3 letters, 1883. Concerning the California Academy of Sciences.
    • Alexander, Barton Stone, 1819-1878
      • 49 letters, 1869-1878. Many written for U.S. Engineer's Office.
    • Alexander, William DeWitt, 1833-1913
      • 38 letters, 1873-1908. Some written for the Hawaiian Government Survey and U.S. Coast and Geodetic Survey, Hawaii. Enclosure with letter, Feb. 5, 1907, is a sketch map showing the position and extent of volcano Mauna Loa in 1868, 1887 and 1907.
    • Alta California See MacCrellish, Frederick
    • Alvord, Benjamin, 1813-1884
      • 2 letters, 1868-1879
    • Alvord, William, 1833-1904
      • 3 letters, 1871-1877
    • American Alpine Club See Bryant, Henry Grier.
    • American Association for the Advancement of Science
      • 5 letters, 1880-1905
    • American Freedmen's Inquiry Commission See Owen, Robert Dale
    • American Geographical Society
      • 21 letters, 1889-1908. Primarily from George C. Hurlbut.
    • American Philosophical Society
      • 5 letters, 1866-1910
    • American Social Science Association
      • 7 letters, 1873-1876. Written by Franklin B. Sanborn.
    • American Society of Civil Engineers
      • 5 letters, 1890-1897. Written by John Bogart, secretary.
    • Amundsen, Roald Engelbregt Gravning, 1872-1928
      • 3 letters, 1906
    • Applegate, S.
      • 6 letters, 1904-1908. Written by a ship's captain, from Unalaska, Alaska, the letters relate primarily to the eruptions on Bogoslov Island, Alaska.
    • Arizona. University See Babcock, Kendric Charles.
    • Ashburner, Emilia (Field) [Mrs. William Ashburner]
      • 16 letters, 1887-1905
    • Ashburner, William, 1831-1887
      • 11 letters, 1877-1887 & undated
    • Association Géodésique Internationale
      • 2 letters, 1890-1891
    • B Miscellany (single letter)
      • Bancroft Library
        • May 21, 1884. From Henry L. Oak.
      • Barendt, Arthur H.
        • June 30, 1896
      • Beach, E. P.
        • Apr. 17, 1868. Re scheme for canal in the Isthmus of Darien.
      • Belcher, Edward Augustus, 1855-
        • July 15, 1891
      • Belden, Josiah, 1815-1892
        • Nov. 29, 1872. Signed also by other citizens of San Francisco and relating to proposed drainage canal for the city.
      • Blanding, Gordon
        • Feb. 17, 1896
      • Boalt, John H.
        • Feb. 10, 1887
      • Bolton, Herbert Eugene, 1870-1953
        • Apr. 21, 1911
      • Bowers, William Wallace, 1834-1917
        • Jan. 4, 1892. Copy, addressed to T. C. Mendenhall.
      • Bowman, Amos
        • May 7, 1879
      • Brigham, William Tufts, 1841-1926
        • Apr. 2, 1906. With this: copy of his address: Shall We Explore the Pacific Islands Now?
      • Britton & Rey, San Francisco
        • Dec. 26, 1885
      • Bryan, William Alanson, 1875-1942
        • June 4, 1906
      • Butler, Nicholas Murray, 1862-1947
        • Aug. 17, 1887
    • Babcock, Kendric Charles, 1864-1932
      • 6 letters, 1903-1906. Most of them written while president, University of Arizona.
    • Bache, Alexander Dallas See Coast and Geodetic Survey correspondence list
    • Bache, Charles M. See Coast and Geodetic Survey correspondence list
    • Bache, H. Wood
      • 12 letters, 1864-1867. Concerning his uncle, A. D. Bache.
    • Bache, Hartman See U.S. Light House Engineer
    • Bache, Nancy Clarke (Fowler) [Mrs. Alexander D. Bache]
      • 42 letters, 1861-1869. Some are addressed to Mrs. Davidson.
    • Badlam, Alexander, 1835-1898
      • 2 letters, 1888-1891
    • Baird, Spencer Fullerton, 1823-1888
      • 19 letters, 1868-1886. Some written for the Smithsonian Institution.
    • Baker, Marcus, 1849-1903
      • 12 letters, 1890-1901. Include those written for the U.S. Geological Survey.

        See also Coast and Geodetic Survey correspondence list.
    • Balch, Thomas Willing, 1866-1927
      • 5 letters, 1900-1904
    • Bancroft, Hubert Howe, 1832-1918
      • 15 letters, 1874-1907
    • Bancroft (A. L.) & Co.
      • 3 letters, 1873-1890
    • Barber, William
      • 11 letters, 1869-1895
    • Bard, Thomas Robert, 1841-1915
      • 2 letters, 1877-1903
    • Barnard, Edward Emerson, 1857-1923
      • 127 letters, 1878-1911. Many of them written while astronomer at Lick Observatory.
    • Barnard, James M.
      • 5 letters, 1872-1874. Some written for the American Social Science Association and for the Agassiz Memorial.
    • Barnes, Joseph K., 1817-1883
      • 3 letters, 1881-1882
    • Barnes, Mary Sheldon
      • 6 letters, 1893-1894
    • Barnes, William H. L., 1836-1902
      • 5 letters, 1872-1897
    • Bartlett, George A. See Coast and Geodetic Survey correspondence list
    • Bartlett, John Russell, 1843-1904 See U. S Hydrographic Office
    • Beadle, E. R.
      • 9 letters, 1868-1874. Many written for the Academy of Natural Sciences of Philadelphia.
    • Bear Valley Land & Water Co. See North, John G.
    • Becker, George Ferdinand, 1847-1919
      • 7 letters, 1879-1907. Some written for the U.S. Geological Survey.
    • Behr, Hans Herman, 1818-1904
      • 4 letters, 1899-1900. Some concern the California Academy of Sciences.
    • Belknap, George Eugene, 1832-1903 See U.S. Navy
    • Belknap, William Worth, 1829-1890 See U.S. War Dept.
    • Benham, Henry Washington See Coast and Geodetic Survey correspondence list.
    • Benjamin, Marcus, 1857-1932
      • 5 letters, 1886-1895
    • Bennett, James Gordon
      • 2 letters, 1874-1882
    • Benyaurd, William H. H., 1841-1900 See U.S. Engineer's Office
    • Bidwell, John, 1819-1900
      • 2 letters, 1885-1890
    • Bien, Julius, 1826-1909
      • 5 letters, 1868-1889. Written for his firm, Julius Bien & Co., Lithographers, Engravers & Printers.
    • Bingham, John Armor, 1815-1900
      • 4 letters, 1874. Written from U.S. legations in Tokyo and Yeddo.
    • Blake, William Phipps, 1825-1910
      • 5 letters, 1870-1887
    • Blinn, F. G.
      • 6 letters, 1889-1891. Mainly re 1889 earthquake.
    • Bogart, John, 1836-1920 See American Society of Civil Engineers.
    • Bonté, John Harmon C., d. 1896 See California. University. Regents
    • Bosqui, Edward, 1832-1917
      • 10 letters, 1878-1900
    • Boutelle, Charles O. See Coast and Geodetic survey correspondence list.
    • Boutwell, George Sewall, 1818-1905 See U.S. Treasury Dept.
    • Bowman, Jacob Neibert, 1875-1968
      • 4 letters, 1905-1911
    • Boyd, James Thomas
      • 104 letters, 1854-1909. Concerning management of Davidson's business affairs and investments.
    • Bradford, Gershom See Coast and Geodetic Survey correspondence list.
    • Brady, John Green, 1848-1918
      • 4 letters, 1902-1907. Written while governor of Alaska.
    • Braid, Andrew See Coast and Geodetic Survey correspondence list.
    • Branner, John Casper, 1850-1922
      • 37 letters, 1892-1911
    • Brashear, John Alfred, 1840-1920
      • 65 letters, 1884-1902
    • Brereton, Robert Maitland
      • 11 letters, 1875-1911
    • Brooks, Charles Wolcott
      • 19 letters, 1871-1884. Some written while Japanese consul for California, concerning wrecks of Japanese vessels on the west coast of America. Some written for the California Academy of Sciences.
    • Brown, Stimson Joseph, 1854- See U.S. Naval Observatory
    • Bryant, Henry Grier, 1859-1932
      • 23 letters, 1897-1906. Some written for the American Alpine Club and for the Geographical Society of Philadelphia.
    • Buhne, Henry H., 1822-1894 [Humboldt Co. pioneer and veteran pilot of the Humboldt Bar]
      • 6 letters, 1859-1891
    • Buhne, Henry H. [his son]
      • 14 letters, 1887-1907. Letter, May 17, 1906, describes the effects of the earthquake in Eureka.
    • Burbank, Luther, 1849-1926
      • 2 letters, 1902
    • Burchard, Horatio Chapin, 1825-1908
      • 2 letters, 1883
    • Burckhalter, Charles, 1849-1923
      • 18 letters, 1886-1910 & undated Some written while assistant-in-charge, Chabot Observatory, Oakland.
    • Burnham, Sherburne Wesley, 1838-1921
      • 38 letters, 1876-1909. Many letters refer to the Lick Observatory.
    • Burton, María Amparo (Ruíz), d. 1894
      • 19 letters, 1874-1891
    • Burtt-Davy, Joseph, 1870-
      • 2 letters, 1902
    • C Miscellany
      • California. Joint Committee on Earthquakes
        • Mar. 6, 1869. From Thomas Rowlandson, secretary.
      • California. University. Extension Division
        • Nov. 9, 1900. From May L. Cheney.
      • California. University. Recorder of the Faculties
        • Apr. 7, 1911. Concerning appointments of Davidson, Stephen J. Field and William Ashburner.
      • Cattell, Alexander Gilmore, 1816-1894
        • Mar, 23, 1867
      • Chamberlain, Samuel Selwyn, 1851-1916
        • Feb. 18, 1891
      • Chandler, Albert Edward, 1872-
        • June 11, 1900
      • Clarke, Ferdinand Lee
        • Apr. 12, 1887. Discusses proposed site for an astronomical observatory in the Hawaiian Islands
      • Cleveland, Grover, Pres. U.S., 1837-1908
        • Feb. 28, 1889. Letter appointing Davidson a delegate to attend meeting of International Geodetic Association.
      • Cook, Walter, 1846-1916
        • Sept. 5, 1899
      • Corbett, Sir Julian Stafford, 1854-1922
        • Dec. 6, 1896
      • Cosmos Club, San Francisco
        • Mar. 2, 1903. Signed by M. J. Kast. Concerning proposed removal of Spanish Archives of California to Washington, D. C.
    • California. Board of State Harbor Commissioners
      • 15 letters, 1876-1907. Some are copies addressed to Rear Admiral John Rodgers. Many relate to the adjustment of harbor lines of San Francisco.
    • California. Governor
      • 3 letters, 1877-1899. Written by executive and/or private secretaries. Letter, May 16, 1877, concerns appointment to Board of Regents, University of California.
    • California. State Earthquake Investigation Commission See Lawson, Andrew C. and Leuschner, Armin O.
    • California. State Engineer
      • 4 letters, 1879-1881
    • California. State Mining Bureau
      • 7 letters, 1886-1893
    • California. Surveyor General
      • 9 letters, 1889-1893. Some relate to the eastern boundary survey.
    • California. University. President
      • 65 letters, 1890-1910. From Martin Kellogg, Benjamin I. Wheeler, Victor Henderson (secretary) and from Ralph P. Merritt (secretary).

        See also Gilman, Daniel C. and Reid, William T.
    • California. University. Regents
      • 81 letters, 1870-1911. From John Harmon C. Bonté, Andrew J. Moulder and Victor H. Henderson (land agent).

        See also Stearns, Robert E. C.
    • California. University, Berkeley. Library
      • 31 letters, 1879-1908. From Joseph C. Rowell.
    • California Academy of Sciences
      • 13 letters, 1869-1903. Include letters from George Hewston, Thomas P. Madden, C. D. Gibbs, William M. Noyes and J. W. Hobson. Form letters acknowledging gifts to the Academy are kept as a unit at the end of the file.
    • California Miners' Association
      • 5 letters, 1899-1902
    • California Silk Culture Association
      • 3 letters, 1881-1884
    • California State Association for the Storage of Flood Waters
      • 3 letters, 1899
    • California State Telegraph Company
      • 4 letters, 1862-1870. From H. W. Carpentier and George H. Mumford. Some concern the use of telegraph lines in coast survey work.
    • California Water and Forest Association
      • 16 letters, 1899-1903. Include letters of the California Water and Forest Society.
    • Campbell, Archibald, d. 1887
      • 3 letters, 1857. Writing as commissioner, U.S.N.W. Boundary Commission.
    • Campbell, Frederick M.
      • 5 letters, 1882-1887. Some concern Chabot Observatory.
    • Campbell, William Wallace, 1862-1938
      • 12 letters, 1893-1908. Written from Lick Observatory. Included also: some astronomical notes written by Campbell.
    • Canada. [Various government departments]
      • 17 letters, 1878-1911. From Dept. of Marine and Fisheries, Geological Survey of Canada, Geographic Board of Canada and the Dept. of the Interior.
    • Cañete del Pinar, Conde [Manuel Villaviciosa y Gordón?]
      • 22 letters, 1894-1909. Concerning their mutual interests in science and Spanish voyages of exploration on the northwest coast of America.
    • Carmany, John H.
      • 6 letters, 1872-1873. Some written for the Overland Monthly and for the California Horticulturalist.
    • Carnegie Institution of Washington See Woodward, Robert Simpson
    • Carson and Colorado Railroad Co.
      • 3 letters, 1887-1890. Two are from H. M. Yerrington.
    • Cattell, James McKeen, 1860-1944
      • 2 letters, 1901-1906
    • Central Pacific Railroad
      • 32 letters, 1872-1882. Primarily from S. S. Montague, chief engineer, concerning meteorological observations at Summit Station.
    • Chabot Observatory, Oakland, Calif. See Burckhalter, Charles, and Campbell, Frederick M.
    • Chandler, Seth Carlo, 1846-1913
      • 3 letters, 1893-1894.

        See also Coast and Geodetic Survey correspondence list.
    • Chase, Alexander W. See Coast and Geodetic Survey correspondence list.
    • Chester, Colby Mitchell See Coast and Geodetic Survey correspondence list.
    • Christy, Samuel Benedict, 1853-1914
      • 14 letters, 1879-1909
    • Churchill, W.
      • 8 letters, 1886-1889. Include some written for the California Academy of Sciences.
    • Clapp, Edward Bull, 1856-1919
      • 2 letters, 1901-1906
    • Clark (Alvan) & Sons, Cambridgeport, Mass.
      • 9 letters, 1881-1897 & undated Primarily concerning manufacture of astronomical equipment for Davidson.
    • Clover, Richardson, 1846-1919
      • 10 letters, 1890-1893. Writing primarily as secretary, U.S. Board on Geographic Names and as hydrographer, U.S. Hydrographic Office.

        See also Coast and Geodetic Survey correspondence list.
    • Coffin, George W. See Coast and Geodetic Survey correspondence list.
    • Colby, William Edward, 1875-1964 See Sierra Club, San Francisco
    • Coleman, William Tell, 1824-1893
      • 3 letters, 1872-1889
    • Colonna, Benjamin A. See Coast and Geodetic Survey correspondence list.
    • Colton, Allen L.
      • 4 letters, 1893-1897. Written from Lick Observatory.
    • Colton, David Douty, 1832-1878
      • 3 letters, 1873-1878
    • Commercial News, San Francisco
      • 3 letters, 1899-1906
    • Comstock, Cyrus Ballou, 1831-1910 See U.S. Mississippi River Commission and U.S. Lake Survey.
    • Cook, Albert Stanburrough, 1853-1927
      • 3 letters, 1884-1886
    • Cooper, W. W. See Coast and Geodetic Survey correspondence list.
    • Cope, Edward Drinker, 1840-1897 See Academy of Natural Sciences of Philadelphia
    • Cordell, Edward See Coast and Geodetic Survey correspondence list.
    • Cory, Clarence Linus, 1872-
      • 2 letters, 1900-1901
    • Courtis, Frank See Coast and Geodetic Survey correspondence list.
    • Cowan, Robert Ernest, 1862-1942
      • 3 letters, 1908-1910
    • Craig, Joseph Edgar, 1845-1925 See U.S. Hydrographic Office.
    • Cramp, Charles Henry, 1828-1913 [class-mate at Philadelphia Central High School]
      • 67 letters, 1886-1911. Enclosure to letter of June 10, 1908: letter addressed to him by Monroe B. S nyder commenting on Davidson's association with James Lick.
    • Crocker, Charles F.
      • 7 letters, 1881-1893. Several relate to the California Academy of Sciences.
    • Cushing, Frank Hamilton, 1857-1900
      • 2 letters, 1887-1888
    • Cutts, Richard D. See Coast and Geodetic Survey correspondence list.
    • Cutts, Richard M. See Coast and Geodetic Survey correspondence list.
    • D Miscellany (single letter)
      • Dalzell, John, 1845-1927
        • Feb. 9, 1895
      • Davis, William Morris, 1850-1934
        • July, 12, 1898
      • DeYoung, Michael Harry, 1849-1925
        • Feb. 11, 1890
      • Downing, Arthur Matthew Weld, 1850-
        • May 4, 1900
      • Dryer, Charles Redway, 1850-1927
        • Oct. 21, 1898
      • Duniway, Clyde Augustus, 1866-1944
        • Mar. 14, 1905
      • Dupuy, Eugene
        • [ca. Mar. 1880]
    • Dall, William Healey, 1845-1927
      • 2 letters, 1907-1908.

        See also Coast and Geodetic Survey correspondence list.
    • Dana, James D.
      • 3 letters, 1873-1887
    • Davidson, Anne [sister]
      • 50 letters, 1850-1905
    • Davidson, Ellinor Campbell [daughter]
      • 17 letters, 1888-1903
    • Davidson, Ellinor (Fauntleroy), 1837-1907 [Mrs. George Davidson]
      • 221 letters, 1851-1904 & undated
    • Davidson, George [nephew]
      • 26 letters, 1872-1911
    • Davidson, George Fauntleroy, 1862-1900 [son]
      • 44 letters, 1871-1900. Some addressed to his mother and to his brother, Thomas.
    • Davidson, Isabella [sister]
      • 75 letters, 1846-1859
    • Davidson, John [brother]
      • 51 letters, 1853-1911
    • Davidson, Lorena [sister]
      • 6 letters, 1869-1872
    • Davidson, Maria [sister]
      • 48 letters, 1846-1889
    • Davidson, Thomas [father]
      • 4 letters, 1845-1846
    • Davidson, Thomas [brother]
      • 504 letters, 1845-1874
    • Davidson, Thomas Drummond, 1865-1934 [son]
      • 22 letters, 1884-1900
    • Davis, Andrew McFarland, 1833-1920
      • 4 letters, 1883-1911
    • Davis, Arthur Powell, 1861-1933 See U.S. Geological Survey
    • Davis, Charles Henry, 1845-1921 See U.S. Naval Observatory
    • Davis, Horace, 1831-1916
      • 20 letters, 1871-1911. Some refer to wrecks of Japanese ships and drifts of N. Pacific currents.
    • Davis, Jefferson Columbus, 1828-1879
      • 3 letters, 1869. Written from Alaska
    • Davis, William Heath, 1822-1909
      • 2 letters, 1895-1900
    • Dawson, George Mercer, 1849-1901
      • 2 letters, 1881-1901
    • Day, David Talbot, 1859-1925 See U.S. Geological Survey.
    • Defforges, G.
      • 11 letters, 1890-1893
    • de Groff, Edward
      • 2 letters, 1901. Written from Alaska; concern question involving Tlingit language.
    • De Kalb, Courtenay, 1861-1931
      • 3 letters, 1891
    • Derrécagaix, Victor Bernard, 1833-1915
      • 4 letters, 1906-1908. In French.
    • Devereux, John [dockmaster, Esquimalt Graving Dock, B.C.]
      • 18 letters, 1888-1903. Concerning tides, currents, shipwrecks, etc.
    • Dickins, Edmund F. See Coast and Geodetic Survey correspondence list.
    • Diller, Joseph Silas, 1850-1928 See U.S. Geological Survey.
    • Dohrmann, Fred W.
      • 2 letters, 1904-1908
    • Donohoe, Kelly & Co., San Francisco
      • 17 letters, 1870-1891. Concerning Davidson's financial affairs.
    • Dorr, F. W. See Coast and Geodetic Survey correspondence list.
    • Douglas, Sir Robert Kennaway, 1838-1913
      • 4 letters, 1887-1890
    • Douglass, Andrew Ellicott, 1867-1901
      • 2 letters, 1896-1898
    • Doyle, Frances M.
      • 3 letters, 1896-1905
    • Doyle, John Thomas, 1819-1906
      • 109 letters, 1864-1906
    • Doyle, W. T. Sherman
      • 4 letters, 1902-1908
    • Drake, Franklin Jeremiah, 1846-1929
      • 3 letters, 1895
    • Drummond, George D. [cousin]
      • 3 letters, 1865
    • Duffield, William Ward See Coast and Geodetic Survey correspondence list.
    • Durand, Elias, 1794-1873
      • 3 letters, 1868
    • Dwelshauvers-Dery, Victor Auguste Ernest, 1836-1913
      • 41 letters, 1878-1911. Some are written in French.
    • Dwinelle, John Whipple, 1816-1881
      • 3 letters, 1872-1877
    • E Miscellany (single letter)
      • Eakle, Arthur Starr, 1862-1931
        • Oct. 21, 1901
      • Egli, Johann Jacob, 1825-1896
        • Mar. 30, 1893. In German.
      • Eliot, Charles William, 1834-1926
        • July 23, 1881
      • Emory, Frederic, 1853-1908
        • June 20, 1900
    • Eastman, John Robie, 1836-1913
      • 11 letters, 1885-1901. Written primarily from the U.S. Naval Observatory.
    • Eastwood, Alice, 1859-1953
      • 9 letters, 1899-1906. Some refer to the California Academy of Sciences.
    • Edmonds, Franklin Spencer
      • 15 letters, 1900-1910. Written primarily while principal of Philadelphia Central High School and relating to activities of alumni.
    • Edmonds, Frank W. See Coast and Geodetic Survey correspondence list.
    • Edwards, Henry
      • 8 letters, 1872-1889. Some refer to the California Academy of Sciences.
    • Edwards, William S. See Coast and Geodetic Survey correspondence list.
    • Eigenmann, Carl H., 1863-1927
      • 2 letters, 1891. Refer to the California Academy of Sciences.
    • Eigenmann, Rosa Smith
      • 4 letters, 1890. Some refer to the California Academy of Sciences.
    • Eimbeck, William See Coast and Geodetic Survey correspondence list.
    • Eisen, Gustavus Augustus, 1847-1940
      • 6 letters, 1873-1886
    • Eldredge, Zoeth Skinner, 1846-1918
      • 24 letters, 1902-1911
    • Eldridge, Oliver
      • 5 letters, 1868-1891. Letter, Aug. 22, 1875, discusses James Lick and his proposed bequests.
    • Elliott, Henry Wood, 1846-1930
      • 3 letters, 1884-1907. Letter, Aug. 3, 1907, discusses destruction of fur seal herd in Alaska.
    • Emmons, George Thornton, 1874-1945
      • 6 letters, 1903-1908. Relating primarily to ethnological interests in Alaska.
    • Evans, Elwood, 1828-1898
      • 8 letters, 1857-1880
    • Evans, Taliesin
      • 32 letters, 1876-1887. Some written for the San Francisco Bulletin.
    • Ewell, Marshall Davis, 1844-1928
      • 3 letters, 1892
    • F Miscellany (single letter)
      • Field, Stephen Johnson, 1816-1899
        • Feb. 13, 1895. Enclosure: letter, Feb. 12, 1895, to Field from George C. Perkins.
      • Foster, Addison Gardner, 1837-1917
        • Feb. 21, 1903. Concerning proposed removal of Spanish Archives of California to Washington, D. C.
    • Fairchild, B. Homer
      • 3 letters, 1880-1889. Concerning Mt. San Antonio as site for an observatory.
    • Fairfield, George A. See Coast and Geodetic Survey correspondence list.
    • Farquhar, George See Coast and Geodetic Survey correspondence list.
    • Fauntleroy, Arthur Robert, 1843-1884 [brother-in-law]
      • 180 letters, 1862-1883
    • Fauntleroy, Edward H. [brother-in-law]
      • 37 letters, 1858-1860
    • Fauntleroy, Jane Dale (Owen) [Mrs. Robert Henry Fauntleroy. Davidson's mother-in-law]
      • 82 letters, 1851-1860
    • Fauntleroy, Robert Henry, d. 1850 [father-in-law]
      • 8 letters, 1847-1849. Mainly concerning Coast and Geodetic Survey business.
    • Fauntleroy, William H. [cousin]
      • 8 letters, 1853-1864
    • Fauth & Co., Washington, D. C.
      • 19 letters, 1878-1885. Concerning astronomical and surveying instruments.
    • Fillebrown, Thomas Scott, 1834-1884 See U.S. Hydrographic Office.
    • Finley, John Park, 1854-
      • 14 letters, 1891-1895. Written primarily from San Francisco while statio ned with Signal Service and Weather Bureau.
    • Fisher, Ralph Talcott, 1877-1948
      • 3 letters, 1903
    • Floyd, Richard S.
      • 4 letters, 1877-1888. Concerning Lick Observatory.
    • Forney, Stehman See Coast and Geodetic Survey correspondence list.
    • Foster, John Watson, 1836-1917 See U.S. Dept. of State.
    • France. [Various departments]
      • 5 letters, 1869-1900. From the consulate in San Francisco, Ministère de l'Agriculture et du Commerce, Ministère de la Guerre, Ministère du Commerce.
    • Franklin, Samuel Rhoads, 1825-1909 See U.S. Navy and U.S. Naval Observatory.
    • Frazer, John Fries, 1812-1872
      • 12 letters, 1864-1872
    • Frazer, Persifor, 1844-1909
      • 13 letters, 1870-1904
    • Friend, Charles W.
      • 17 letters, 1881-1906. Written from Carson Observatory, Nevada.
    • Fryer, John, 1839-1928
      • 2 letters, 1900-1908
    • Funston, Frederick, 1865-1917
      • 2 letters, 1892
    • G Miscellany (single letter)
      • Gibbons, Robinson
        • undated Gives figures for Spanish measurements--vara, league, etc.
      • Gleeson, Richard A., 1861-1945
        • Jan. 17, 1909
      • Golden Coast [magazine]
        • Mar. 22, 1877. From R. A. Cameron, editor.
      • Goode, George Brown, 1851-1896
        • Nov. 5, 1888
      • Gorman, Arthur Pue, 1839-1906
        • Mar. 25, 1895
      • Greenebaum, Alfred
        • May 10, 1910
    • Gannett, Henry, 1846-1914 See U.S. Board of Geographic Names.
    • Garnett, Porter See Academy of Pacific Coast History, Berkeley, Calif.
    • Geographical Society of the Pacific
      • 84 letters, 1881-1910. Primarily from C. Mitchell Grant and John Partridge.
    • Gibbs, George, 1815-1873
      • 13 letters, 1867-1868
    • Gilbert, Grove Karl, 1843-1918 See U.S. Geological Survey.
    • Gilbert, J. J. See Coast and Geodetic Survey correspondence list.
    • Gilder, William Henry, 1838-1900
      • 4 letters, 1890
    • Gilman, Daniel Coit, 1831-1908
      • 11 letters, 1872-1897. Written primarily while president, University of California.
    • Glassford, William Alexander
      • 14 letters, 1882-1907. Written while working with U.S. Military Telegraph Lines as signal officer, in the Office of the Chief Signal Officer, Hdqrs. Department of the Colorado, Hdqrs. Division of the Philippines, and while conducting cable operations in Southeast Alaska.
    • Glave, E. J.
      • 8 letters, 1890-1891. Mainly concerning experiences while with Frank Leslie's Alaska exploring expedition.
    • Goddard, George Henry, 1817-1906
      • 9 letters, 1893-1902. Primarily concerning California eastern boundary survey. Included also: "General Description of the Goddard Collection of Pictures, Maps and Minerals." written by Goddard.
    • Gogorza, Anthoine de
      • 41 letters, 1866-1883. Mainly concerning proposed canal across Isthmus of Darien.
    • Goodall, Charles
      • 7 letters, 1882-1893. Primarily concerning telescopic instruments.
    • Goodall, Perkins & Co., San Francisco
      • 10 letters, 1880-1895. Mainly concerning surveys and soundings. Enclosures to letter, Nov. 7, 1893: replies to circular letter issued to agents on southern coast requesting information on tidal wave of Oct. 13.
    • Goode, Richard Urquhart, 1858-1903 See U.S. Geological Survey.
    • Goodfellow, Edward, 1828-1899 See Coast and Geodetic Survey correspondence list.
    • Goodyear, Watson Andrews
      • 15 letters, 1872-1888. Some written while associated with California State Mining Bureau.
    • Gore, J. Howard
      • 2 letters, 1887. Letter, Apr. 25, 1887, concerns alleged mistake in Yolo base measurements.
    • Gould, Benjamin Apthorp, 1824-1896
      • 16 letters, 1866-1890
    • Grant, Ulysses Sherman, 1867-1932
      • 3 letters, 1906-1911. Concerning Alaskan glaciers.
    • Gray, Asa, 1810-1888
      • 8 letters, 1868-1877
    • Gray, George E.
      • 48 letters, 1870-1909. Written while chief engineer, Southern Pacific Railroad.
    • Great Britain. Royal Observatory, Greenwich
      • 9 letters, 1876-1882
    • Great Britain. [Various departments]
      • 16 letters, 1875-1906, From Board of Trade, Foreign Office, Admiralty, Ordnance Survey Office, consulate in San Francisco.
    • Green (J. and H. J.), New York
      • 20 letters, 1860-1883. Concerning geodetic instruments.
    • Greenbaum, Louis
      • 2 letters, 1903-1911
    • Greene, Charles Samuel, 1856-1930 See Overland Monthly.
    • Greene, Edward Lee, 1843-1915
      • 22 letters, 1887-1899
    • Greenwell, W. E. See Coast and Geodetic Survey correspondence list.
    • Gregory, Warren, 1864-1927
      • 5 letters, 1893-1907
    • Griffin, R. J. See Coast and Geodetic Survey correspondence list.
    • Grunsky, Carl Ewald, 1855-1934
      • 18 letters, 1885-1904
    • Gwin, William McKendree, 1805-1885
      • Letter, Jan. 25, 1873
    • H Miscellany
      • Hale, George Ellery, 1868-1938
        • Feb. 7, 1905
      • Hanford, Cornelius Holgate, 1849-
        • Dec. 26, 1904
      • Harte, Bret, 1836-1902
        • Apr. 10, 1869. Written for the Overland Monthly.
      • Hawaiian Government Survey
        • July 15, 1884
      • Hayden, Ferdinand Vandiveer, 1829-1887
        • Feb. 22, 1872
      • Hearst, Phoebe (Apperson), 1842-1919
        • Feb. 22, 1902
      • Hellman, Isaias W.
        • Mar. 23, 1897. Addressed to the Secretary of the Treasury.
      • Henshaw, Frederick William, 1858-1929
        • Apr. 5, 1893
      • Herbertson, Andrew John, 1865-1915
        • Oct. 8, 1898
      • Hermann, Binger, 1843-1926
        • Feb. 17, 1895. Addressed to Cleveland Rockwell.
      • Hill, George William, 1838-1914
        • Mar. 28, 1898
      • Hittell, Theodore Henry, 1830-1917
        • Feb. 9, 1887
      • Hittell, Mrs. Theodore Henry
        • June 27, 1885
      • Holder, Charles Frederick, 1851-1915
        • Apr. 22, 1906
      • Huggins, Sir William, 1824-1910
        • Feb. 8, 1890
      • Huntington, Oliver Whipple, 1858-1924
        • Nov. 16, 1890
      • Hutchings, James Mason, 1820-1902
        • Aug. 25, 1890
    • Haggin, James B., 1827-1914
      • 4 letters, 1877-1878
    • Hague, James Duncan, 1836-1908
      • 7 letters, 1879-1908
    • Hale, Edward Everett, 1822-1909
      • 4 letters, 1888-1907
    • Hall, Asaph, 1829-1907
      • 32 letters, 1874-1896
    • Hall, Harvey Monroe, 1874-1932
      • 5 letters, 1905-1910
    • Hall, William Hammond, 1846-1926
      • 6 letters, 1879-1892. One written for the U.S. Geological Survey; one re Davidson's appointment to S. F. commission concerned with planning the city's sewerage and drainage system.
    • Hallidie, Andrew Smith, 1836-1900
      • 3 letters, 1872-1883
    • Halter, R. E. See Coast and Geodetic Survey correspondence list.
    • Hambly, Harry Bishop, 1862-1937 See The History Co.
    • Hamlin, Sarah Dix
      • 3 letters, 1895-1901
    • Hanks, Henry G., 1852-1907
      • 7 letters, 1872-1893
    • Hansen, George, 1824-
      • 7 letters, 1890-1895
    • Harford, William G. W.
      • 87 letters, 1867-1895. Some written for the California Academy of Sciences.
    • Harkness, William, 1837-1903
      • 6 letters, 1886-1897
    • Harrington, Mark Walrod, 1848-1926
      • 3 letters, 1871-1894
    • Harrison, A. M. See Coast and Geodetic Survey correspondence list.
    • Harrison, Henry
      • 2 letters, 1885-1886. Concerning his telescopic pictures of the moon.
    • Harrison, Ralph Chandler, 1833-1918
      • 13 letters, 1889-1911
    • Hart, Jerome Alfred, 1854-1937
      • 2 letters, 1883
    • Harvey, John Downey
      • 2 letters, 1894-1895
    • Hastings, Charles Sheldon, 1848-1932
      • 3 letters, 1883-1884
    • Hastings, Serrano Clinton, 1814-1893
      • 3 letters, 1873
    • Haupt, Lewis Muhlenberg, 1844-1937
      • 7 letters, 1874-1905
    • Healey, Charles T.
      • 20 letters, 1876-1908. Written as independent surveyor and civil engineer.
    • Hearst, William Randolph, 1863-1951
      • 6 letters, 1890-1901. Some written for him by T. T. Williams, business manager, San Francisco Examiner.
    • Heilprin, Angelo, 1853-1907
      • 3 letters, 1900-1903
    • Hein, Samuel See Coast and Geodetic Survey correspondence list.
    • Helmert, Friedrich Robert, 1843-1917
      • 18 letters, 1889-1907. Most of them are in German.
    • Henderson, Victor H. See California. University. President, and California. University. Regents.
    • Hendrickson, William Woodbury, 1844-1920 See U.S. Navy Dept.
    • Henry, Joseph, 1797-1878
      • 10 letters, 1868-1877
    • Hergesheimer, E. See Coast and Geodetic Survey correspondence list.
    • Hesse, Frederick Godfrey, 1825-1911
      • 3 letters, 1886-1895
    • Hilgard, Eugene Woldemar, 1833-1916
      • 5 letters, 1877-1908
    • Hilgard, Julius Erasmus See Coast and Geodetic Survey correspondence list.
    • Hill, Charles B.
      • 24 letters, 1885-1910. Concerning mutual interests in astronomy and other scientific matters.

        See also Coast and Geodetic Survey correspondence list.
    • Hirsch, A.
      • 3 letters, 1889-1891. Concerning Association Géodésique Internationale. In French and English.
    • Hirsch, J.
      • 9 letters, 1889-1900. Written as ingénieur en chef des ponts & chaussées, Paris. In French.
    • The History Company
      • 4 letters, 1890. From H. Bishop Hambly.
    • Hitchcock, Albert Spear, 1865-1935 See U.S. Dept. of Agriculture.
    • Hittell, John Shertzer, 1825-1901
      • 10 letters, 1861-1901
    • Hoag, William R.
      • 2 letters, 1895-
    • Holden, Edward Singleton, 1846-1914
      • 31 letters, 1880-1895. Some written as president, University of California, and as director, Lick Observatory.
    • Holman, Frederick Van Voorhies, 1852-
      • 8 letters, 1907-1911
    • Holway, Ruliff Stephen, 1857-
      • 8 letters, 1904-1911
    • Hooper, Calvin Leighton
      • 8 letters, 1890-1897. Written mainly from the U.S. Revenue steamer, "Corwin," in Alaska, Port Townsend and Bering Sea.
    • Hoover, John T. See Coast and Geodetic Survey correspondence list.
    • Hopkins, Caspar Thomas, 1826-1893
      • 8 letters, 1872-1884
    • Hopkins, Rufus Clement, 1816-
      • 3 letters, 1884-1895
    • Houghton, R. E.
      • 7 letters, 1884-1893. Concerning land litigation.
    • Howard, Oliver Otis, 1830-1909 See U.S. Army.
    • Howe, Herbert Alonzo, 1858-1926
      • 2 letters, 1881
    • Howe Scale Co., Portland, Vt.
      • 2 letters, 1878. Concerning awards given at the Exposition Universelle de 1878, Paris.
    • Howison, George Holmes, 1834-1916
      • 8 letters, 1885-1910
    • Hubbard, Gardiner Greene, 1822-1897
      • 2 letters, 1893-1895
    • Hubbard, Sam [personal friend]
      • 27 letters, 1860-1895
    • Humphreys, William P.
      • 6 letters, 1892. Written as engineer in charge of collection of data for proposed sewerage system, San Francisco.
    • Hussey, William Joseph, 1862-1926
      • 3 letters, 1893-1894
    • Hutchings, Gertrude
      • 2 letters, 1891-1892
    • Hutchinson, Lincoln, d. 1940
      • 4 letters, 1901-1904
    • India. Surveyor General
      • 5 letters, 1875-1880
    • Irish, John Powell, 1843-1923
      • 2 letters, 1890 & undated
    • Irwin, William, 1827-1886
      • Letter and telegram, 1877
    • J Miscellany
      • Jaffa, Myer Edward, 1857-
        • May 16, 1901
    • Jackson, Abraham Wendell, 1855-
      • 12 letters, 1880-1890
    • James, George Wharton, 1858-1923
      • 2 letters, 1884
    • James Lick Trust
      • 3 letters, 1881-1887. From H. E. Mathews, secretary.
    • Japan, [Various departments]
      • 24 letters, 1874-1909. From Dept of Education, Hydrographic Office, official in charge of the Transit of Venus operations, Legation in Washington, D. C., Imperial Earthquake Investigation Committee, etc.
    • Japan. Consulate, New York City
      • 5 letters, 1876
    • Japan. Consulate, San Francisco
      • 8 letters, 1876-1907
    • Japan. Hydrographic Office
      • 43 letters, 1874-1906
    • Johnson, Philip Carrigain See Coast and Geodetic Survey correspondence list.
    • Johnson, Willard Drake, 1859- See U.S. Geological Survey.
    • Jones, William Carey, 1854-1923
      • 3 letters, 1881-1889
    • Jordan, David Starr, 1851-1931
      • 21 letters, 1892-1907
    • Judah, Anna (Pierce) [Mrs. Theodore D. Judah]
      • 2 letters, 1879. One concerns her husband.
    • K Miscellany
      • Kahn, Julius, 1861-1924
        • Feb. 23, 1903
      • Kearney, M. Theodore, d. 1906
        • Dec. 16, 1876
      • Keeler, Charles Augustus, 1871-1937
        • Aug. 8, 1897
      • Kidder, John F.
        • May 20, 1893. Re survey of eastern boundary of California in 1863.
      • Kofoid, Charles Atwood, 1865-1947
        • Dec. 8, 1905
      • Kroeber, Alfred Louis, 1876-1960
        • Aug. 24, 1905
    • Kammerer, Gustav
      • 11 letters, 1890-1911. Concerning engineering and surveying instruments.
    • Karr, Heywood Walter Seton See Seton-Karr, Heywood Walter.
    • Keeler, James Edward, 1857-1900
      • 5 letters, 1889-1895
    • Keith, Mary (McHenry), 1855-1947
      • 4 letters, 1900-1911
    • Keith, William, 1838-1911
      • 13 letters, 1886-1910 & undated
    • Kellogg, Albert, 1813-1887
      • 19 letters, 1867-1886 & undated
    • Kellogg, Martin See California. University. President.
    • Kennedy, Charles W. See Coast and Geodetic Survey correspondence list.
    • Kerr, Mark Brickell, 1860-1917 See U.S. Geological Survey.
    • Kneass, Strickland, 1821-1884
      • 4 letters, 1865 & undated
    • L Miscellany (single letter)
      • Lea, Isaac, 1792-1886
        • Nov. 5, 1868
      • Lemmon Sara Allen (Plummer) [Mrs. John Gill Lemmon]
        • Mar. 21, 1881
      • LeVerrier, Urbain Jean Joseph, 1811-1877
        • Nov. 29, 1876. In French.
      • Leypoldt, Frederick, 1835-1884
        • Feb, 28, 1879
      • Los Angeles, Common Council
        • Feb. 4, 1870
      • Lubin, David, 1849-1919
        • Aug. 1, 1892
      • Ludlow, Nicoll, 1842-1915
        • May 19, 1893
    • Ladies' Silk Culture Society of California
      • 3 letters, 1885-1908. Also: form letters announcing meetings.
    • Laidlaw, Alexander Hamilton, 1828-1908
      • 10 letters, 1904-1908
    • Lamont, Daniel Scott, 1851-1905 See U.S. War Dept.
    • Langley, Samuel Pierpont, 1834-1906
      • 10 letters, 1881-1902. Some written for the Smithsonian Institution.
    • Lansing, Robert, 1864-1928 See U.S. Dept. of State.
    • Lawson, Andrew Cowper, 1861-1952
      • 14 letters, 1892-1907. Some concern the State Earthquake Investigation Committee, 1906.
    • Lawson, James Smythe See Coast and Geodetic Survey correspondence list.
    • Lawson, W. H.
      • 3 letters, 1893-1910. Two concern death of his brother, James Lawson, Davidson's assistant.
    • Lawton, Israel See U.S. Mint, San Francisco.
    • Le Conte, John, 1818-1891
      • 17 letters, 1871-1885
    • Le Conte, John Lawrence, 1825-1883
      • 16 letters, 1859-1881
    • Le Conte, Joseph, 1823-1901
      • 6 letters, 1882-1900
    • Lee, Leslie Alexander, 1852-1908 See U.S. Bureau of Fisheries.
    • Lemascheffsky, P. de [one-time commander of Russian ship, "Alexander II"]
      • 3 letters, 1899. Concerning events in Russian Alaska in 1862.
    • Lemmon, John Gill, 1832-1908
      • 3 letters, 1881-1883. One written jointly with his wife, Sara Allen (Plummer) Lemmon.
    • Leuschner, Armin Otto, 1868-1953
      • 37 letters, 1894-1911. Some written while secretary, State Earthquake Investigation Commission, 1906-1907.
    • Libbey, William, 1855-1927
      • 2 letters, 1904
    • Lick Observatory See the following correspondence files: E. E. Barnard, S. W. Burnham, Allen L. Colton, William W. Campbell, Richard S. Floyd, Edward S. Holden, Charles B. Hill, Charles H. Rockwell, Milicent W. Shinn, and J. M. Schaeberle.
    • Lincoln, Robert Todd, 1843-1926 See U.S. War Dept.
    • Livermore, Horatio P.
      • 2 letters, 1877
    • Loud, Eugene Francis, 1847-1908
      • 3 letters, 1900-1903
    • Louderback, George Davis, 1874-1957
      • 7 letters, 1906-1907. Many written for the Seismological Society of America.
    • Loughead, Flora (Haines) Apponyi, 1855-
      • 10 letters, 1887-1907 & undated Some concern the California Academy of Sciences.
    • Low, Frederick Ferdinand, 1828-1894
      • 3 letters, 1862-1863
    • Lowell, Percival, 1855-1916
      • 6 letters, 1896-1911
    • Lummis, Charles Fletcher, 1859-1928
      • 2 letters, 1895-1905. One-written for the Landmarks Club.
    • Lund, Henry
      • 18 letters, 1894-1911. Written while consul for Sweden and Norway in San Francisco.
    • M Miscellany (single letter)
      • McCammon, Joseph Kay, 1845-1907
        • Jan. 2, 1885
      • McGee, W. J. 1853-1912
        • Nov. 23, 1898
      • Martin, Eleanor (Downey)
        • May 19, 1895
      • Maybeck, Bernard Ralph, 1862-1957
        • Sept. 13, 1902
      • Merriam, Clinton Hart, 1855-1942
        • Aug. 23, 1900
      • Morgan, John Tyler, 1824-1907
        • Nov. 23, 1897
    • McAdie, Alexander George, 1863-1943
      • 42 letters, 1899-1909. Written while in charge of local office, U.S. Weather Bureau, San Francisco.
    • MacCrellish, Frederick
      • 35 letters, 1858-1872. Written while proprietor of the Alta California.
    • Macdonald, Charles, 1837-1928
      • 7 letters, 1863-1872
    • McElroy, William J.
      • 33 letters, 1863-1876. Concerning Davidson's financial and legal business in Philadelphia.
    • McEnerney, Garret William, 1865-1942
      • 2 letters, 1898-1901
    • McLaren, John, 1846-1943
      • 3 letters, 1891-1895
    • McMurtrie, William B. See Coast and Geodetic Survey correspondence list.
    • Maguire, Nicholas H. [old school friend]
      • 27 letters, 1862-1866
    • Manson, Marsden, 1850-1931
      • 30 letters, 1883-1909. Some written while chief engineer, Board of State Harbor Commissioners, California, and while city engineer, San Francisco.
    • Marcuse, Adolf, 1860-
      • 2 letters, 1891
    • Marr, R. A. See Coast and Geodetic Survey correspondence list.
    • Martin, Archer Evans Stringer, 1865-
      • 6 letters, 1903-1905
    • Martin, James West, 1822-1899
      • 3 letters, 1880-1895
    • Martin, Lawrence, 1880-
      • 3 letters, 1907-1910
    • Mason, Otis Tufton, 1838-1908 See U.S. National Museum.
    • Meany, Edmond Stephen, 1862-1935
      • 5 letters, 1903-1910
    • Mechanics' Institute, San Francisco
      • 3 letters, 1884-1898
    • Mendell, George Henry, d. 1902
      • 147 letters, 1870-1901 & undated Many written for U.S. Engineer's Office. Some concern sewerage system for San Francisco.
    • Mendenhall, Thomas Corwin, 1841-1924
      • 10 letters, 1 886-1901.

        See also Coast and Geodetic Survey correspondence list.
    • Merritt, Ralph Palmer See California. University. President.
    • Merry, William Lawrence, 1842-1911
      • 18 letters, 1892-1909. Written from the American Legation at San José, Costa Rica, many letters relate to the proposed Nicaragua Canal Project and to Panama.
    • Metcalf, Victor Howard, 1853-1936 See U.S. Dept. of Commerce and Labor.
    • Mighels, Ella Sterling, 1853-1934
      • 2 letters, 1892 & undated
    • Mikkelsen, Ejnar, 1880-
      • 2 letters, 1906. Concerning the Anglo American Polar Expedition.
    • Miller, John Franklin, 1831-1886
      • 5 letters, 1881-1885
    • Mills, Darius Ogden, 1825-1910
      • 5 letters, 1879-1897
    • Milne, John, 1850-1913
      • 4 letters, 1890-1900. Some written for Seismological Society of Japan.
    • Mitchell, Henry See Coast and Geodetic Survey correspondence list.
    • Mitchell, John Hipple, 1835-1905
      • 2 letters, 1895
    • Molera, Eusebius Joseph, 1847-
      • 18 letters, 1884-1909. Some written for the California Academy of Sciences.
    • Moore, Justin P.
      • 16 letters, 1881-1890. Some refer to the California Academy of Sciences.
    • Moore, V. King
      • 25 letters, 1895-1904. Concerning the Bacon-Shakespeare cipher.
    • Moore, Willis Luther, 1856-1927 See U.S. Weather Bureau.
    • Morgan, William B. See Coast and Geodetic Survey correspondence list.
    • Morris, William Gouverneur, d. 1884
      • 3 letters, 1871-1882
    • Morrow, William W., 1843-1929
      • 9 letters, 1887-1894. The 1890 letters refer to Ivan Petroff and the 1890 Alaska census.
    • Morse, Edward Sylvester, 1838-1925
      • 4 letters, 1877-1882
    • Morse, Fremont See Coast and Geodetic Survey correspondence list.
    • Morse, J. H.
      • 2 letters, 1910. Concerning his brother, Fremont Morse.
    • Moser, Jefferson Franklin, 1848-1934
      • 13 letters, 1891-1907. Some written for U.S. Commission on Fish and Fisheries.

        See also Coast and Geodetic Survey correspondence list.
    • Moses, Bernard, 1846-1930
      • 4 letters, 1899-1902. Three written while member, U.S. Philippine Commission.
    • Mosman, A. T. See Coast and Geodetic Survey correspondence list.
    • Moulder, Andrew Jackson, 1825-1895
      • 2 letters, 1890-1892
    • Muir, John, 1838-1914
      • 4 letters, 1892-1907
    • Murdock, Charles Albert, 1841-1928
      • 2 letters, 1877-1893
    • Murphy, John K. [old school friend]
      • 4 letters, 1890-1899
    • Murray, David, 1830-1905
      • 17 letters, 1874-1885. Many relate to his stay in Japan as advisor to Imperial Minister of Education.
    • Muybridge, Eadweard, 1830-1904
      • 4 letters, 1873-1880
    • N Miscellany (single letter)
      • Naglee, Henry Morris, 1815-1886
        • Nov. 26, 1876
      • Nansen, Fridtjof, 1861-1930
        • Jan. 13, 1911
      • National Irrigation Association
        • July 26, 1899. Signed by George H. Maxwell.
      • Needham, James Carson, 1864-1942
        • Feb. 27, 1903
    • National Academy of Sciences
      • 4 letters, 1868-1911
    • New York State Survey
      • 2 letters, 1880
    • Newcomb, Mary Caroline (Hassler) [Mrs. Simon Newcomb]
      • 5 letters, 1894-1907
    • Newcomb, Simon, 1835-1909
      • 38 letters, 1868-1908. Some written for U.S. Naval Observatory.
    • Newcomb, Charles Frederic, 1851-
      • 5 letters, 1905-1910
    • Newell, Frederick Haynes, 1862-1932 See U.S., Geological Survey.
    • Newton, Hubert Anson, 1830-1896
      • 4 letters, 1866-1883
    • Nichols, Henry E. See Coast and Geodetic Survey correspondence list.
    • Nichols, William Ford, 1849-1924
      • 16 letters, 1892-1910
    • Nichols, William Ripley, 1847-1886
      • 2 letters, 1880
    • Niebaum, Gustave, d. 1908
      • 12 letters, 1906. Mainly concerning their mutual interest in Alaska. With these: "In Memoriam ..." written by Davidson.
    • Noble, John Willock, 1831-1912 See U.S. Dept of the Interior.
    • Nordhoff, Charles, 1830-1901
      • 6 letters, 1874-1895. Included also: letter written by Lida L. Nordhoff.
    • North, John G.
      • 3 letters, 1889-1890. Some written for Bear Valley Land & Water Co.
    • Norway. Consulate, San Francisco
      • 3 letters, 1906-1907. Concerning Roald Amundsen.
    • Norway. Legation, Washington, D. C.
      • 3 letters, 1907. Concerning the decoration (cross of the 1st class of the Royal Order of St. Olav) awarded Davidson by the king.
    • O Miscellany (single letter)
      • Oakland, Calif. City Clerk
        • Apr. 14, 1869. Informing Davidson he had been chosen one of the Board of Engineers in accordance with a resolution of the City Council.
      • Olney, Warren, 1841-1921
        • Apr. 8, 1904
      • Osterhout, Winthrop John Van Leuven, 1871-
        • Feb. 4, 1906
    • Oak, Henry Lebbeus, 1844-1905 See Bancroft Library.
    • Ogden, Herbert G. See Coast and Geodetic Survey correspondence list.
    • Ogilvie, William
      • 3 letters, 1900-1904. Writing as commissioner of Yukon Territory.
    • O'Halloran, Rose
      • 34 letters, 1890-1911. Concerning her interest in and lectures on astronomy.
    • Orton, William, 1826-1878 See Western Union Telegraph Co.
    • Overland Monthly
      • 5 letters, 1871-1895. Primarily from Charles S. Greene.
    • Owen, Ernest Dale [son of Robert Dale Owen]
      • 2 letters, 1900-1902
    • Owen, Mary Jane (Robinson) [Mrs. Robert Dale Owen]
      • 18 letters, 1846-1866
    • Owen, Richard, 1810-1890
      • 10 letters, 1859-1888
    • Owen, Robert Dale, 1801-1877
      • 28 letters, 1861-1868. Some written while member of American Freedmen's Inquiry Commission.
    • P Miscellany (single letter)
      • Paris. Exposition Universelle de 1867
        • Dec. 26, 1867. From N. M. Beckwith, commissioner general for the U.S.
      • Paris. Exposition Universelle de 1878
        • July 16, 1878. From F. A. P. Barnard, assistant commissioner general for the U.S.
      • Peale, Rembrandt, 1778-1860
        • Dec. 2, 1858
      • Peixotto, Edgar Davis, 1867-
        • Apr. 4, 1904. Written as secretary of the Bohemian Club.
      • Peters, Charles Rollo, 1862-1928
        • Dec. 24, 1873
      • Pettee, William Henry, 1838-1904
        • Apr. 2, 1872
      • Philadelphia. Mayor
        • Sept. 19, 1862. From Alexander Henry, thanking Davidson for offer of service necessary for defense of the city.
      • Porter, Jermain Gildersleeve, 1852-1933
        • Jan. 18, 1901
      • Porter, John Addison, 1856-1900
        • May 4, 1897. Addressed to the Secretary of the Treasury. Enclosure: letter from Charles H. Townshend, May 1, 1897.
    • Pacific Coast Steamship Co.
      • 33 letters, 1879-1909. Include copies of reports from ship captains on Alaska glaciers.
    • Pacific Commercial Museum
      • 6 letters, 1900-1902. From Eugene Goodwin and Irving M. Scott.
    • Pacific Mail Steam Ship Company
      • 17 letters, 1850-1908
    • Pacific Postal Telegraph-Cable Company
      • 2 letters, 1886-1893
    • Page, Thomas Walker, 1866-1937
      • 2 letters, 1901-1903
    • Paine, Robert Treat, 1835-1910
      • 3 letters, 1879-1880
    • Palmer, W. R. See Coast and Geodetic Survey correspondence list.
    • Pardee, George Cooper, 1857-1941
      • 5 letters, 1903-1907
    • Pardo de Figueroa, Rafael
      • 11 letters, 1899-1906
    • Parke, John Grubb, 1827-1900
      • 2 letters, 1857. Concerning Northwest boundary survey.
    • Parsons, Francis H. See Coast and Geodetic Survey correspondence list.
    • Parsons, John W. See Coast and Geodetic Survey correspondence list.
    • Patrick & Carter, Philadelphia
      • 7 letters, 1875-1876. Concerning instruments ordered by Davidson for the Japanese government.
    • Patterson, Carlile Pollock See Coast and Geodetic Survey correspondence list.
    • Payne, William Wallace, 1837-1928
      • 6 letters, 1884-1896
    • Peacock, D. See Coast and Geodetic Survey correspondence list.
    • Peirce, Benjamin See Coast and Geodetic Survey correspondence list.
    • Peirce, Charles Sanders See Coast and Geodetic Survey correspondence list.
    • Pennsylvania. University
      • 2 letters, 1889. Concerning honorary degree.
    • Perkins, Frank Walley See Coast and Geodetic Survey correspondence list.
    • Perkins, Frederic Beecher, 1828-1899
      • 6 letters, 1880-1890
    • Perkins, George Clement, 1839-1923
      • 17 letters, 1881-1904. Several letters (or copies thereof) are addressed to other people and referred to Davidson for his information. Most of them refer to Davidson's dismissal from the Coast and Geodetic Survey in 1895 and to his candidacy for superintendent in 1897.
    • Petrov Ivan, 1842-1896
      • 13 letters, 1881-1887
    • Phelps, Thomas Stowell, 1822-1901 See U.S. Navy Yard, Mare Island, Calif.
    • Philadelphia. Central High School
      • 3 letters, 1867-1902
    • Philadelphia Commercial Museum
      • 13 letters, 1899-1902
    • Phythian, Robert Lees, 1835-1917 See U.S. Naval Observatory.
    • Pickering, Edward Charles, 1846-1919
      • 38 letters, 1877-1910. Some are form letters written for Harvard College Observatory.
    • Pickering, William Henry, 1858-1938
      • 2 letters, 1888
    • Picking, Henry F., 1840-1899 See U.S. Hydrographic Office.
    • Pinchot, Gifford, 1865-1946
      • 2 letters, 1903-1910
    • Plehn, Carl Copping, 1867-1945
      • 9 letters, 1898-1900. Include some written for the Pacific Commercial Museum.
    • Poett, Alfred
      • 8 letters, 1886-1899. Many concern water litigation.
    • Pond, Charles Fremont, 1856-1929
      • 5 letters, 1892-1905
    • Porter, J. W. See Coast and Geodetic Survey correspondence list.
    • Powell, John Wesley, 1834-1902 See U.S. Geological Survey.
    • Pratt, J. F. See Coast and Geodetic Survey correspondence list.
    • Price (Thomas) & Son, Assay Office, San Francisco
      • 6 letters, 1878-1895
    • Pritchett, Henry Smith, 1857-1939
      • 11 letters, 1882-1904.

        See also Coast and Geodetic Survey correspondence list.
    • Pugh, William H. See Coast and Geodetic Survey correspondence list.
    • Puterbaugh, George, 1842-
      • 21 letters, 1893-1903
    • Putnam, Frederic Ward, 1839-1915
      • 2 letters, 1904-1905
    • Putnam, Osgood
      • 2 letters, 1901-1902. Concerning International Geodetic Association land deeded to the University of California.
    • Putzker, Albin, 1845-1923
      • 3 letters, 1883-1890
    • Q Miscellany (single letter)
      • Quay, Matthew Stanley, 1833-1904
        • Feb. 11, 1895
    • R Miscellany (single letter)
      • Ralston, William Chapman, 1826-1875
        • Jan, 26, 1874
      • Randall, Samuel Jackson, 1828-1890
        • May 25, 1884
      • Reid, Whitelaw, 1837-1912
        • May 9, 1872
      • Ricard, Jerome Sixtus, 1850-1930
        • May 29, 1906
      • Riordan, Patrick William, 1841-1914
        • Apr. 14, 1896
      • Rose, Robert Selden, 1888-
        • Apr. 20, 1911
      • Rosecrans, William Starke, 1819-1898
        • Apr. 27, 1882
      • Rothwell, Richard Pennefeather, 1836-1901
        • Feb. 5, 1895
      • Rowell, Chester Harvey, 1867-1948
        • Feb. 18, 1902
    • Rathbun, Richard, 1852-1918 See U.S. Bureau of Fisheries.
    • Raymond, Charles Walker, 1842-1913 See U.S. Army and U.S. Engineer's Office.
    • Raymond, William G.
      • 4 letters, 1886-1905
    • Redding, Benjamin Bernard, 1824-1882
      • 11 letters, 1877-1882. Some written for the Land Dept. of the Central Pacific Railroad Co.
    • Redding, Joseph Deighn, 1859-1932
      • 2 letters, 1885-1888
    • Reid, Harry Fielding, 1859-1944
      • 13 letters, 1895-1909
    • Reid, William Thomas, 1843-1922
      • 28 letters, 1877-1890. Some written while president, University of California.
    • Richardson, Daniel Sidney, 1851-
      • 2 letters, 1891-1892
    • Richthofen, Ferdinand Paul Wilhelm freiherr von, 1833-1905
      • 2 letters, 1902-1903
    • Rising, Willard Bradley, 1839-1910
      • 3 letters, 1879-1881
    • Ritter, William Emerson, 1856-1944
      • 14 letters, 1892-1902
    • Rivers, John James
      • 5 letters, 1884-1891
    • Robbins, John, 1808-1880
      • 3 letters, 1851-1852
    • Robert, Henry Martyn, 1837-1923 See U.S. Engineer's Office,
    • Robertson, James Alexander, 1873-1939
      • 3 letters, 1908
    • Robeson, George Maxwell, 1829-1897 See U.S. Navy Dept.
    • Rockwell, Charles H.
      • 15 letters, 1876-1903. Some concern the Lick Observatory.
    • Rockwell, Cleveland See Coast and Geodetic Survey correspondence list.
    • Rodgers, Augustus F. See Coast and Geodetic Survey correspondence list.
    • Rodgers, John, 1812-1882
      • 18 letters, 1873-1881. Some written for U.S. Naval Observatory and for U.S. Navy Yard, Mare Island, Calif.
    • Rogers, Charles Custis, 1856-1917 See U.S. Hydrographic Office.
    • Rogers, Howard Jason, 1861-1927
      • 2 letters, 1904-1905
    • Rogers, Fairman, 1833-1900
      • 3 letters, 1865-1868
    • Rogers, William Augustus, 1832-1898
      • 4 letters, 1879-1891
    • Rowell, Joseph Cummings See California. University, Berkeley. Library.
    • Runcie, Constance (Fauntleroy), 1836-1911 [sister-in-law]
      • 157 letters, 1854-1910
    • Runcie, James, d. 1889 [brother-in-law]
      • 33 letters, 1862-1886
    • Russell, Israel Cook, 1852-1906
      • 15 letters, 1890-1906. Some written for the U.S. Geological Survey.
    • Ruth, James S. See Coast and Geodetic Survey correspondence list.
    • S Miscellany (single letter)
      • Sampson, Archibald J., 1839-1921
        • Apr. 24, 1900
      • San Francisco. Board of Pilot Commissioners
        • June 9, 1880
      • Shinn, Milicent Washburn, 1858-1940
        • Oct. 10, 1892. Concerning Lick Observatory.
      • Slate, Frederick, 1852-1930
        • Jan. 7, 1895
      • Sloss, Marcus C., 1869-
        • Sept. 2, 1907
      • Smith, Harlan Ingersoll, 1872-1940
        • May 12, 1902
      • Snowden, Clinton A.
        • Sept. 12, 1908
      • Snyder, Monroe Benjamin, 1848-1932
        • Jan. 4, 1904
      • Spencer, Joseph William Winthrop, 1851-1921
        • Mar. 8, 1905
      • Spreckels, Claus, 1828-1908
        • Apr. 6, 1900
      • Spreckels, John Diedrich, 1853-1921
        • Nov. 19, 1898
      • Stanford, Jane Lathrop, 1825-1905
        • June 12, 1904
      • Stephens, Henry Morse, 1857-1919
        • July 30, 1907
      • Stevens, George Thomas, 1832-1921
        • Ca. Apr. 11, 1894. Enclosure: copy of his letter to James M. McDonald.
      • Stevens, Isaac Ingalls, 1818-1862
        • Jan. 4, 1853.

          See also Coast and Geodetic Survey correspondence list.
      • Swift, Lewis, 1820-1913
        • Apr. 28, 1888
    • San Diego. Chamber of Commerce
      • 4 letters, 1871-1900. Some concern the Pacific Commercial Museum.
    • San Diego. [Various departments and officials]
      • 6 letters, 1871-1885. Concerning San Diego harbor and water works.
    • San Francisco. Board of Engineers
      • 7 letters, 1892-1893
    • San Francisco. Board of Supervisors
      • 7 letters, 1880-1892
    • San Francisco. Chamber of Commerce
      • 14 letters, 1870-1909
    • San Francisco. Chief of Police
      • 2 letters, 1891
    • San Francisco. City and County Surveyor
      • 2 letters, 1888-1892
    • San Francisco. Dept. of Public Instruction
      • 2 letters, 1902
    • San Francisco. Mayor
      • 3 letters, 1868-1892
    • San Francisco. Office of the Park Commissioners
      • 2 letters, 1888-1905
    • San Francisco Bulletin See Evans, Taliesin.
    • San Francisco Examiner
      • 4 letters, 1892-1906
    • San Francisco Microscopical Society
      • 3 letters, 1881. One is addressed to the Secretary of the Treasury.
    • Sanborn, Franklin Benjamin, 1831-1917 See American Social Science Association.
    • Sands, Benjamin Franklin, 1812-1883 See U.S. Naval Observatory.
    • Sargent, Aaron Augustus, 1827-1887
      • 2 letters, 1884
    • Scammon, Charles Melville, 1825-1911
      • 5 letters, 1872-1880
    • Schaeberle, John Martin, 1853-1924
      • 18 letters, 1890-1896
    • Schilling, Rudolph
      • 2 letters, 1910
    • Schlesinger, Frank, 1871-
      • 3 letters, 1900-1901
    • Schott, Charles Anthony See Coast and Geodetic Survey correspondence list.
    • Schröder, Hugo
      • 8 letters, 1881-1899. Concerning telescopic equipment.
    • Scidmore, Eliza Ruhamah, 1856-1928
      • 3 letters, 1884-1893
    • Science Observer [magazine]
      • 10 letters, 1879-1882
    • Scott, Irving Murray, 1837-1903
      • 8 letters, 1891-1900
    • See, Thomas Jefferson Jackson, 1866-
      • 26 letters, 1906-1911
    • Seismological Society of America See Louderback, George Davis.
    • Seismological Society of Japan See Milne, John.
    • Senger, Henry
      • 7 letters, 1903-1910
    • Sengteller, Louis A. See Coast and Geodetic Survey correspondence list.
    • Setchell, William Albert, 1864-1943
      • 21 letters, 1899-1911
    • Seton-Karr, Heywood Walter, 1859-
      • 3 letters, 1885-1887
    • Shaw, William J.
      • 4 letters, 1902-1905. Describing experiences working in the Philippines.
    • Shaw, William James, 1824-
      • 2 letters, 1886
    • Shinn, Charles Howard, 1852-1924
      • 3 letters, 1900-1902 & undated
    • Shrewsbury, Samuel
      • 5 letters, 1872-1876. Concerning discovery of Indian relics, fossils, etc.
    • Shufeldt, Robert Wilson, 1822-1895 See U.S. Naval Observatory.
    • Sierra Club. San Francisco
      • 12 letters, 1893-1909. From William Colby. Elliott McAllister, J. S. Hutchinson.
    • Sigsbee, Charles Dwight, 1845-1923 See U.S. Hydrographic Office.
    • Slack, Charles W., 1858-
      • 2 letters, 1898
    • Slevin, Marie C. (Bruguière) [Mrs. Thomas E. Slevin]
      • 21 letters, 1905-1911
    • Slevin, Thomas Edwards, 1837-1894
      • 79 letters, 1883-1894. Concerning mutual interests in California history, place names, Geographical Society of the Pacific, etc.
    • Sloss (Louis) & Co., San Francisco
      • 6 letters, 1879-1897
    • Smillie, Thomas William, 1843-1917
      • 2 letters, 1886-1887
    • Smith, Daniel B., 1792-1883
      • 24 letters, 1867-1880
    • Smith, Edwin See Coast and Geodetic Survey correspondence list.
    • Smith, Hamilton, Jr.
      • 6 letters, 1881-1882 & undated Primarily concerning mining litigation.
    • Smith, James Drummond [cousin]
      • 7 letters, 1907-1910
    • Smith, John Drummond [cousin]
      • 2 letters, 1906
    • Smith, T. Guildford, 1839-1912
      • 35 letters, 1860-1902 & undated
    • Smithsonian Institution
      • 8 letters, 1884-1907
    • Smyth, Charles Piazzi, 1819-1900
      • 12 letters, 1865-1886
    • Soulé, Frank, 1845-1913
      • 18 letters, 1886-1902
    • Southerland, William Henry Hudson, 1852-1933 See U.S. Hydrographic Office.
    • Southern Pacific Company
      • 44 letters, 1879-1911. Concerning rail elevations, effects of earthquakes, etc.
    • Spooner, John A.
      • 34 letters, 1865-1868. Many concern the surveying expedition for the proposed canal across the Isthmus of Darien.
    • Stafford, Orin Fletcher, 1873-1941
      • 5 letters, 1907-1908
    • Stager, Anson, 1825-1885 See Western Union Telegraph Co.
    • Stanford, Leland, 1824-1893
      • 4 letters, 1880-1893. Written primarily by his private secretaries. Letter, Feb. 17, 1880, encloses copy of letter, Jan. 21, 1880, from Eadweard Muybridge to Stanford discussing photographing the eclipse of the sun.
    • Stanton, Robert Brewster, 1846-1922
      • 6 letters, 1898-1909
    • Stearns, Robert Edwards Carter, 1827-1909
      • 129 letters, 1872-1909. Some written for Board of Regents, University of California.
    • Stebbins, Horatio, 1821-1902
      • 11 letters, 1877-1895 & undated
    • Steel, Lilburn H. [Philadelphia friend]
      • 24 letters, 1869-1886
    • Steel, William Gladstone
      • 5 letters, 1900-1902. Some relate to the organization, Mazamas.
    • Stejneger, Leonhard Hess, 1851-
      • 3 letters, 1905-1906
    • Stevens, Isaac I. See Coast and Geodetic Survey correspondence list.
    • Stevens, Robert J.
      • 8 letters, 1875-1885. Primarily concerning Coast and Geodetic Survey.
    • Stevenson, Edward Luther, 1860-
      • 2 letters, 1907
    • Stewart, William Morris, 1827-1909
      • 2 letters, 1887-1895
    • Stillman, John Maxson, 1852-1923
      • 3 letters, 1892-1904
    • Stone, Ormond, 1847-1933
      • 3 letters, 1877-1878
    • Stratton, Frederick Smith, 1859-1915 See U.S. Custom House, San Francisco
    • Suess, Werner See Coast and Geodetic Survey Correspondence list.
    • Sutro, Adolph Heinrich Joseph, 1830-1898
      • 13 letters, 1886-1894. Included also: letter, Apr. 19, 1911, written by executrix of Adolph Sutro Estate.
    • Swan, James Gilchrist, 1818-1900
      • 9 letters, 1877-1893
    • T Miscellany (single letter)
      • Teggart, Frederick John, 1870-1946
        • Dec. 6, 1910
      • Tevis, Henry Lloyd, 1856-1931
        • Dec. 16, 1887
      • Tompkins, Edward, 1815-1872
        • Feb. 1, 1870
      • Truxtun, William Talbot, 1824-1887
        • Jan. 28, 1869
      • Twitchell, Edward, 1828-1912
        • May 11, 1893
      • Tyndall, John, 1820-1893
        • Nov. 20, 1872
    • Tanner, Zera Luther, 1835-1906 See U.S. Bureau of Fisheries.
    • Tatlock, John, 1860-1926
      • 5 letters, 1885
    • Taussig, Edward David See Coast and Geodetic Survey correspondence list.
    • Taylor, Alexander Smith, 1817-1876
      • 2 letters, 1872-1873
    • Taylor, Charles L., 1826-
      • 2 letters, 1891
    • Taylor, Edward Robeson, 1838-1923
      • 3 letters, 1898-1905
    • Taylor, Henry Clay See Coast and Geodetic Survey correspondence list.
    • Technical Society of the Pacific Coast See Von Geldern, Otto
    • Thayer, Martin Russell, 1819-1906
      • 3 letters, 1864-1867
    • Thomas, Charles Mitchell See Coast and Geodetic Survey correspondence list.
    • Thomas, Chauncey, 1850-1919 See U.S. Hydrographic Office.
    • Thomas William, 1853-
      • 9 letters, 1894-1906. Many concern California water problems.
    • Thompson, Almon Harris, 1839-1906 See U.S. Geological Survey
    • Thorn, Frank Manly, 1836-
      • 69 letters, 1889-1907.

        See also Coast and Geodetic Survey correspondence list.
    • Throckmorton, S. R., Jr. See Coast and Geodetic Survey correspondence list.
    • Tittmann, Otto Hilgard See Coast and Geodetic Survey correspondence list.
    • Todd, Chapman Coleman, 1848-1929 See U.S. Hydrographic Office.
    • Todd, David Peck, 1855-1939
      • 3 letters, 1877-1888
    • Tolmie, William Fraser, 1812-1886
      • 5 letters, 1872-1885
    • Torrey, Harry Beal, 1873-
      • 2 letters, 1906
    • Trowbridge, W. P. See Coast and Geodetic Survey correspondence list.
    • Turner, George, 1850-1932
      • 2 letters, 1903
    • Turrill, Charles Beebe, 1854-1927
      • 2 letters, 1883
    • U Miscellany (single letter)
      • U.S. Board on Geographic Names
        • Apr. 16, 1895. From Henry Gannett, chairman.
      • U.S. Consulate, Apia, Samoa
        • Aug. 4, 1898. From Luther W. Osborn. Concerning Samoan time change.
      • U.S. Consulate, Nagasaki, Japan
        • Dec. 28, 1874. Concerning U.S. Transit of Venus Commission.
      • U.S. Custom House, Sitka, Alaska
        • Aug. 13, 1887
      • U.S. National Museum
        • May 25, 1892. From Otis T. Mason to T. Dix Bolles. Enclosure: letter to Bolles from J. C. Johnston, May 11, 1892.
      • U.S. Surveyor General for Washington Territory
        • Dec. 17, 1885
      • Updegraff, Milton, 1861-1938
        • Feb. 15, 1894
    • Union Iron Works
      • 4 letters, 1887-1899
    • U.S. Adjutant General's Office
      • 2 letters, 1882-1902. The former concerns the Transit of Venus Commission, New Mexico.
    • U.S. Army
      • 49 letters, 1854-1892. Include letters from Signal Corps; headquarters, Division of the Pacific; and Alcatraz Island. Some written by O. O. Howard, Charles W. Raymond, and William D. Whipple.
    • U.S. Arsenal. Benicia, Calif.
      • 15 letters, 1854-1886
    • U.S. Bureau of American Ethnology
      • 6 letters, 1879-1908
    • U.S. Bureau of Fisheries
      • 21 letters, 1877-1907. Include letters of predecessor, U.S. Commission of Fish and Fisheries. Some written by Leslie A. Lee, Zera L. Tanner, Richard Rathbun, Herbert A. Gill.
    • U.S. Bureau of Navigation
      • 10 letters, 1872-1907
    • U.S. Coast and Geodetic Survey See separate list of correspondents.
    • U.S. Commission of Fish and Fisheries See U.S. Bureau of Fisheries.
    • U.S. Custom House, San Francisco
      • 22 letters, 1869-1907. Include letters from Frederick S. Stratton.
    • U.S. Dept. of Agriculture
      • 13 letters, 1884-1908. Include letters from the Office of the U.S. Superintendent of Silk Culture and one from Albert S. Hitchcock.
    • U.S. Dept. of Commerce and Labor
      • 6 letters, 1903-1906. Include letter from Victor H. Metcalf.
    • U.S. Dept. of State
      • 17 letters, 1872-1906. Include letters from John W. Foster and Robert Lansing concerning Alaskan Boundary Tribunal; letters from Office of the U.S. Commissioner General, Universal Exposition of 1878; letter of introduction from Hamilton Fish.
    • U.S. Dept. of the Interior
      • 23 letters, 1873-1906. Include letter from John W. Noble.
    • U.S. Engineer Dept.
      • 102 letters, 1859-1906. Include letters from William H. H. Benyaurd, Charles S. Stewart, Henry M. Robert, Charles W. Raymond.
    • U.S. Geological Survey
      • 83 letters, 1872-1911. Include letters from David T. Day. Frederick H. Newell, Grove K. Gilbert, Herbert M. Wilson, Mark B. Kerr, John W. Powell, Richard U. Goode, Joseph S. Diller, Almon H. Thompson, Arthur P. Davis, Willard D. Johnson.
    • U.S. Hydrographic Office
      • 82 letters, 1868-1911. Include letters from Charles C. Rogers. Thomas S. Fillebrown, Robert H. Wyman, John R. Bartlett, Henry F. Picking, Charles D. Sigsbee, Joseph E. Craig, Chapman D. Todd, Chauncey Thomas, William H. H. Southerland.
    • U.S. Internal Revenue Service
      • 9 letters, 1868-1888
    • U.S. Lake Survey
      • 3 letters, 1875-1880. From Cyrus B. Comstock.
    • U.S. Light House Board
      • 13 letters, 1869-1894
    • U.S. Light House Engineer
      • 100 letters, 1855-1893
    • U.S. Light House Inspector
      • 29 letters, 1870-1907
    • U.S. Mint, San Francisco
      • 17 letters, 1871-1907. Include letters from Israel Lawton, superintendent.
    • U.S. Mississippi River Commission
      • 118 letters, 1884-1892. Include letters from Cyrus B. Comstock.
    • U.S. Naval Observatory
      • 39 letters, 1868-1911. Include letters from Benjamin F. Sands, Charles H. Davis Robert W. Shufeldt, Robert L. Phythian, Stimson J. Brown, Asa Walker, Samuel R. Franklin, N. Rowan.
    • U.S. Navy
      • 20 letters, 1869-1890. Include letters from Samuel Franklin and George E. Belknap.
    • U.S. Navy Dept.
      • 12 letters, 1872-1911. Include letters from George M. Robeson.
    • U.S. Navy Yard, Mare Island, Calif.
      • 26 letters, 1869-1899. Include letters from Thomas S. Phelps and Philip C. Johnson.
    • U.S. Office of Indian Affairs
      • 4 letters, 1887-1891. From the Quinault Agency, Washington Territory, and from Mission Agency, Cotton, California.
    • U.S. Office of the U.S. Superintendent of Silk Culture See U.S. Dept. of Agriculture.
    • U.S. Quartermaster's Dept.
      • 5 letters, 1869-1892
    • U.S. Revenue Cutter Service
      • 18 letters, 1868-1907
    • U.S. Steamboat Inspection Service
      • 10 letters, 1877-1911
    • U.S. Superintendent of Life-Saving Service
      • 8 letters, 1883-1895
    • U.S. Surveyor General for California
      • 24 letters, 1870-1908
    • U.S. Surveyor General for Oregon
      • 4 letters, 1877-1886
    • U.S. Treasury Dept.
      • 40 letters, 1849-1911. Include letters from George S. Boutwell.
    • U.S. War Dept.
      • 31 letters, 1871-1905. Include letters from William W. Belknap, Robert T. Lincoln and Daniel S. Lamont.
    • U.S. Weather Bureau
      • 18 letters, 1892-1906. Include letter from Willis L. Moore.
    • United States Agency for the Paris Universal Exposition
      • 5 letters, 1866-1867
    • V Miscellany
      • Van Trump, P. B.
        • Sept. 13, 1888. Describes ascent of Mt. Rainier with John Muir and William Keith.
    • Vignaud, Henry, 1830-1922
      • 7 letters, 1889-1893
    • Violle, Jules, 1841-
      • 3 letters, 1893-1907. In French.
    • Virginia and Truckee Railroad Co.
      • 2 letters, 1890
    • Vitkovskii, Vasilii Vasil'evich, 1856-1924
      • 12 letters, 1892-1909, Signed: B. Witkovsky.
    • Von Geldern, Otto
      • 16 letters, 1891-1911. Some written for the Technical Society of the Pacific Coast.
    • Voorsanger, Jacob, 1852-1908
      • 8 letters, 1896-1903
    • W Miscellany (single letter)
      • Walker, Francis Amasa, 1840-1897
        • Sept. 28, 1885
      • Whitney, Maria
        • May 30, 1899. Enclosures: two letters from John Conway, Feb. 18 and June 10, 1872, addressed to her brother, J. D. Whitney, re Conway's attempted ascent of Half Dome in Yosemite.
      • Willey, Samuel Hopkins, 1821-1914
        • Apr. 26, 1892
    • Wagoner, Luther
      • 6 letters, 1881-1893. Some written as special census agent.
    • Walker, Asa, 1845-1916 See U.S. Naval Observatory.
    • Ward, Henry Augustus, 1834-1906
      • 9 letters, 1880-1902
    • Washburn & Co., Wawona, Calif.
      • 2 letters, 1890
    • Watkins, Carleton Emmons, 1829-1916
      • 4 letters, 1878-1879
    • Watson, James Craig, 1838-1880
      • 4 letters, 1873-1877
    • Welker, P. A. See Coast and Geodetic Survey correspondence list.
    • Wells, Annie C. [Mrs. E. H. Wells]
      • 8 letters, 1890-1891
    • Wells, E. H.
      • 8 letters, 1891. Concerning the Frank Leslie Illustrated Newspaper expedition to Alaska.
    • Westdahl, Ferdinand See Coast and Geodetic Survey correspondence list.
    • Western Union Telegraph Company
      • 24 letters, 1868-1898. Include letters from William Orton and Anson Stager.
    • Wheeler, Benjamin Ide See California. University. President.
    • Wheelock, Jerome
      • 4 letters, 1878-1881
    • Whipple, William Denison, 1826-1902 See U.S. Army.
    • White, Stephen Mallory, 1853-1901
      • 8 letters, 1895. Some are addressed to other persons. Most are concerned with the 1895 appropriations for the Coast and Geodetic Survey and Davidson's dismissal.
    • White, T. Brook
      • 5 letters, 1895. Most are written as secretary of Mazamas society.
    • Whitney, Josiah Dwight, 1819-1896
      • 4 letters, 1871-1890
    • Wickersham, James, 1857-1939
      • 8 letters, 1892-1899
    • Wickson, Edward James, 1848-1923
      • 4 letters, 1887-1907
    • Wilcox, Milton Charles, 1853-
      • 2 letters, 1910
    • Willey, Henry Ide
      • 11 letters, 1880-1910.

        See also Coast and Geodetic Survey correspondence list.
    • Williams, T. T.
      • 9 letters, 1901-1902. Some written for the San Francisco Examiner.
    • Wilson, Herbert Michael, 1860-1920 See U.S. Geological Survey.
    • Wilson, Horace, 1843-1927
      • 8 letters, 1883-1893
    • Wilson, Thomas, 1832-1902
      • 2 letters, 1898-1899. Concerning the Calaveras skull.
    • Wines, M. W. See Coast and Geodetic Survey correspondence list.
    • Winlock, Joseph, 1826-1875
      • 2 letters, 1869-1870
    • Winsor, Justin, 1831-1897
      • 2 letters, 1888-1890
    • Winston, Isaac, 1853-1923 See Coast and Geodetic Survey correspondence list.
    • Witkovsky, B. See Vitkovskii, Vasilii Vasil'evich
    • Wood, Harry Oscar, 1879-
      • 2 letters, 1906-1909
    • Woods, Samuel Davis, 1845-1915
      • 13 letters, 1901-1909
    • Woodward, Robert Simpson, 1849-1924
      • 3 letters, 1890-1909
    • Woodward, Thomas P. See Coast and Geodetic Survey correspondence list.
    • Würdemann, William [instrument maker]
      • 30 letters, 1874-1901. Written from Germany.

        See also Coast and Geodetic Survey correspondence list
    • Wyman, Robert Harris, 1822-1882 See U.S. Hydrographic Office.
    • X-Y-Z Miscellany
      • Yosemite Valley and Mariposa Big Tree Grove Commissioners
        • Feb. 16, 1895
    • Yale, Charles Gregory
      • 35 letters, 1873-1905 & undated Many concern the California Academy of Sciences.
    • Yates, Lorenzo Gordin, 1837-1909
      • 7 letters, 1890-1891
    • Yerington, Henry Marvin See Carson and Colorado Railroad Co.

    Coast and Geodetic Survey Correspondence

    • Alden, James, 1810-1877 [naval officer detailed to the Survey]
      • 13 letters, 1853-1859
    • Bache, Alexander Dallas, 1806-1867 [superintendent, 1843-1867]
      • 631 letters, 1844-1865
    • Bache, Charles M., 1829-1890 [assistant]
      • 8 letters, 1863
    • Baker, Marcus, 1849-1903 [acting assistant]
      • 2 letters, 1882
    • Bartlett, George A. [disbursing clerk]
      • 234 letters, 1885-1890
    • Benham, Henry Washington, [army engineer detailed to the Survey]
      • 22 letters, 1853-1856
    • Boutelle, Charles O., 1813-1890 [assistant in charge of Washington office]
      • 169 letters, 1846-1886
    • Bradford, Gershom [assistant]
      • 128 letters, 1871-1883
    • Braid, Andrew [acting superintendent]
      • 11 letters, Apr.-May, 1895
    • Chandler, Seth Carlo, 1846-1913 [aid]
      • 7 letters, 1866-1867
    • Chase, Alexander W. [aid, sub-assistant, assistant]
      • 238 letters, 1867-1892. Include some written after dismissal from the Survey.
    • Chester, Colby Mitchell [naval officer detailed to the Survey]
      • 8 letters, 1883-1885
    • Clover, Richardson, 1846-1919 [naval officer detailed to the Survey]
      • 5 letters, 1885-1886
    • Coffin, George W. [naval officer detailed to the Survey]
      • 4 letters, 1877
    • Colonna, Benjamin A. [sub-assistant; assistant; assistant in charge of office and topography]
      • 1426 letters, 1877-1911. Letters written after his dismissal from the Survey are included since they deal primarily with Survey affairs.
    • Cooper, W. W. [clerk to the superintendent; assistant]
      • 307 letters, 1858-1882
    • Cordell, Edward [assistant]
      • 46 letters, 1867-1870
    • Courtis, Frank, 1844-1908 [naval officer detailed to the Survey]
      • 4 letters, 1877-1878
    • Cutts, Richard D., 1817-1883 [assistant; assistant in charge of office and topography]
      • 162 letters, 1851-1883
    • Cutts, Richard M. [naval officer detailed to the Survey]
      • 8 letters, 1876-1879
    • Dall, William Healey, 1845-1927 [assistant]
      • 31 letters, 1871-1880. Many relate to the Alaska survey.
    • Dickins, Edmund F. [aid; sub-assistant; assistant]
      • 130 letters, 1869-1910
    • Dorr, F. W. [adjunct assistant in charge]
      • 31 letters, 1873-1874
    • Duffield, William Ward [superintendent, 1894-1897]
      • 124 letters, 1894-1895
    • Edmonds, Frank W. [assistant]
      • 17 letters, 1889-1911
    • Edwards, William S. [aid]
      • 6 letters, 1873-1876
    • Eimbeck, William [sub-assistant; assistant]
      • 120 letters, 1872-1902
    • Ellicott, Eugene [sub-assistant]
      • 16 letters, 1872-1879
    • Fairfield, George A. [assistant; assistant for assistant in charge of office]
      • 8 letters, 1850-1885
    • Farquhar, George [sub-assistant]
      • 113 letters, 1867-1880
    • Fisher, William J. [tidal observer]
      • 32 letters, 1873-1884. Written mainly from St. Paul, Kodiak Island, Alaska.
    • Forney, Stehman [aid; sub-assistant; assistant]
      • 140 letters, 1867-1888
    • Gilbert, J. J. [aid; sub-assistant; assistant]
      • 109 letters, 1870-1910
    • Goodfellow, Edward, 1828-1899 [assistant for assistant in charge]
      • 221 letters, 1867-1887
    • Gray, Emmet [tidal observer]
      • 73 letters, 1877-1895. Written from Sausalito, Calif.
    • Greenwell, W. E. [assistant]
      • 133 letters, 1861-1877
    • Griffin, R. J. [disbursing agent]
      • 59 letters, 1894-1895
    • Halter, R. E. [sub-assistant; assistant]
      • 21 letters, 1866-1869
    • Harrison, A. M. [assistant; acting assistant in charge]
      • 28 letters, 1847-1863
    • Hein, Samuel [disbursing agent]
      • 236 letters, 1846-1877
    • Hensel, Martin [private secretary to the superintendent]
      • 5 letters, 1894
    • Hergesheimer, E. [assistant]
      • 60 letters, 1863-1888
    • Hilgard, Julius Erasmus, 1825-1891 [assistant, assistant in charge of office, superintendent, 1881-1885]
      • 958 letters, 1849-1885
    • Hill, A. P. [naval officer detailed to the Survey]
      • 8 letters, 1856-1860
    • Hill, Charles B. [assistant]
      • 42 letters, 1882-1886
    • Hoover, John T. [clerk of the Computing Division; private secretary to the superintendent; in charge of stationery, instruments, etc.]
      • 47 letters, 1858-1878
    • Johnson, Philip Carrigain, 1828-1887 [naval officer detailed to the Survey]
      • 41 letters, 1864-1874
    • Kennedy, Charles W. [naval officer detailed to the Survey]
      • 6 letters, 1872-1873
    • Lawson, James Smythe, 1828-1893 [assistant]
      • 523 letters, 1848-1891
    • Leutze, E. H. C. [naval officer detailed to the Survey]
      • 4 letters, 1878-1879
    • Lowry, T. J. [aid]
      • 6 letters, 1876
    • McMurtrie, William B. [Drawing Division]
      • 5 letters, 1862-1864
    • Marr, R. A. [aid; sub-assistant]
      • 61 letters, 1883-1888
    • Mendenhall, Thomas Corwin [superintendent, 1889-1894]
      • 1189 letters, 1889-1894
    • Mitchell, Henry, 1830-1902 [hydrographer]
      • 7 letters, 1864-1870
    • Morgan, William B. [disbursing agent]
      • 116 letters, 1882-1885
    • Morse, Fremont [aid; sub-assistant]
      • 68 letters, 1880-1911
    • Moser, Jefferson Franklin, 1848-1934 [naval officer detailed to the Survey as a hydrographic inspector]
      • 26 letters, 1885-1895
    • Mosman, A. T. [sub-assistant]
      • 79 letters, 1859-1894
    • Nichols, Henry E. [naval officer detailed to the Survey]
      • 24 letters, 1880-1891
    • Ogden, Herbert G. [acting assistant in charge of office; assistant]
      • 10 letters, 1886-1900
    • Palmer, W. R. [army engineer detailed to the Survey]
      • 30 letters, 1855-1861
    • Parsons, Francis H. [sub-assistant for assistant in charge of office]
      • 11 letters, 1880-1893
    • Parsons, John W. [disbursing agent]
      • 249 letters, 1890-1894
    • Patterson, Carlile Pollock [hydrographic inspector; superintendent, 1874-1881]
      • 794 letters, 1862-1881
    • Peacock, D. [naval officer detailed to the Survey]
      • 10 letters, 1886-1888
    • Peirce, Benjamin, 1809-1880 [superintendent, 1867-1874]
      • 233 letters, 1865-1874
    • Peirce, Charles Sanders, 1839-1914 [acting assistant in charge of office; assistant in charge of office]
      • 41 letters, 1872-1879
    • Perkins, Frank Walley [acting superintendent]
      • 42 letters, 1901-1911
    • Porter, J. W. [disbursing agent]
      • 72 letters, 1877-1882
    • Pratt, John F. [sub-assistant]
      • 121 letters, 1879-1906
    • Pritchett, Henry Smith, 1857-1939 [superintendent, 1897-1900]
      • 6 letters, 1898-1900
    • Pugh, William H. [acting superintendent]
      • 42 letters, July-Sept. 1894
    • Rockwell, Cleveland [assistant]
      • 151 letters, 1868-1888
    • Rodgers, Augustus F. [sub-assistant; assistant]
      • 199 letters, 1848-1907
    • Ruth, James S. [assistant]
      • 7 letters, 1846-1852
    • Saegmuller G. N.
      • 5 letters, 1876-1878
    • Schott, Charles Anthony, 1826-1901 [assistant in charge of Computing Division; acting assistant in charge of office topography]
      • 204 letters, 1856-1896
    • Sengteller, Louis A. [sub-assistant; assistant]
      • 243 letters, 1868-1885
    • Sinclair, C. H. [assistant]
      • 14 letters, 1893-1908
    • Smith, Edwin [assistant]
      • 6 letters, 1866-1907
    • Smith, M. L. [army officer detailed to the Survey]
      • 9 letters, 1857-1858
    • Snow, A. S. [naval officer detailed to the Survey]
      • 3 letters, 1884-1887
    • Stevens, Isaac I. [assistant in charge of office]
      • 17 letters, 1851-1853
    • Suess, Werner [mechanician]
      • 5 letters, 1881-1883
    • Taussig, Edward David, 1847-1921 [naval officer detailed to the Survey]
      • 16 letters, 1884-1886
    • Taylor, Henry Clay, 1845-1904 [naval officer detailed to the Survey]
      • 21 letters, 1874-1877
    • Thomas, Charles Mitchell, 1846-1908 [naval officer detailed to the Survey]
      • 4 letters, 1887-1888
    • Thorn, Frank Manly [superintendent, 1885-1889]
      • 595 letters, 1885-1889
    • Throckmorton, S. R., Jr, [aid]
      • 121 letters, 1870-1873
    • Tidball, John C. [army officer detailed to the Survey]
      • 6 letters, 1855
    • Tittmann, Otto Hilgard, 1850-1938 [sub-assistant; assistant; acting superintendent; superintendent, 1900-1915]
      • 132 letters, 1873-1911
    • Trowbridge, W. P. [assistant]
      • 6 letters, 1853-1861
    • Welker, P. A. [aid]
      • 22 letters, 1883-1888
    • West, Preston C. F. [assistant]
      • 7 letters, 1858-1863
    • Westdahl, Ferdinand [draftsman; assistant]
      • 171 letters, 1876-1911
    • Willey, Henry Ide [aid]
      • 7 letters, 1872-1873
    • Williams, James [assistant]
      • 4 letters, 1846-1848
    • Wilson, Louis [tidal observer]
      • 21 letters, 1877. Written from Port Townsend, W. T., and from Astoria, Ore.
    • Wines, M. W. [general assistant for assistant in charge of office]
      • 167 letters, 1879-1895
    • Winston, Isaac, 1853-1923 [sub-assistant; assistant]
      • 63 letters, 1888-1910
    • Woodward, Thomas P. [aid]
      • 7 letters, 1873-1875
    • Würdemann, William [in charge of instrument shop]
      • 32 letters, 1864-1874

    Correspondence in Ellinor C. Davidson's papers

    • Miscellany
      • Amundsen, Roald Engelbregt Gravning, 1872-1928
        • Dec. 26, 1916
      • Bolton, Herbert Eugene, 1870-1953
        • Aug. 10, 1939
      • Campbell, William Wallace, 1862-1938
        • Oct, 30, 1936
      • Eldredge, Zoeth Skinner, 1846-1918
        • Oct, 26, 1912
      • Yale, Charles Gregory
        • Mar. 18, 1919
    • American Geographical Society
      • 3 letters, 1935
    • Davenport, Charles Benedict
      • 4 letters, 1936-1938. One is addressed to Alexander McAdie.
    • Eastwood, Alice
      • 2 letters, 1942-1943
    • Henry E. Huntington Library
      • 5 letters, 1924-1944
    • Holway, Ruliff Stephen
      • 3 letters, 1912-1924
    • Meany, Edmond Stephen
      • 2 letters, 1928-1929
    • See, Thomas Jefferson Jackson
      • 17 letters, 1936-1943

    Correspondence in Thomas D. Davidson's Papers

    • Manson, Marsden
      • Letter, Jan. 19, 1918
    • Yale, Charles Gregory
      • Letter, July 31, 1918