Correspondence, speeches and writings, diaries, notes, memoranda, photographs, and memorabilia, relating to miscellaneous
aspects of Anglo-Soviet relations during the Russian Revolution, British espionage in the Soviet Union during the Russian
Revolution, miscellaneous aspects of British government activities during World War II (including Anglo-Czechoslovak relations),
and personal affairs. Includes many letters by Baroness Moura Budberg, some letters by British espionage agent Sidney Reilly,
and some material about him collected by Lockhart's son, Robin Bruce Lockhart.