Speeches and writings, correspondence, notes, printed matter, phonotapes, phonorecords, and photographs, relating to philosophy, the nature of knowledge, the philosophy of culture, the philosophy and methodology of science, and the philosophy of history and the social sciences. Deacribed in two groups, original collection (boxes 1-463) and the incremental materials acquired at a later date (boxes 464-583).

575 manuscript boxes, 6 oversize boxes, 2 card file boxes, 28 envelopes, 47 phonotape reels, 4 phonotape cassettes, 11 phonorecords (248 linear feet)

For copyright status, please contact the Hoover Institution Archives