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.