Writings, correspondence, memoranda, reports, orders, interview transcripts, notes, conference papers, printed matter, and photographs, relating to international communism; Joseph Stalin, Georgi Dimitrov and the Communist International; the history, political and social systems and foreign policy of the Soviet Union; the German occupation of areas of the Soviet Union during World War II, and the Vlasov movement; the KAL 007 airplane incident; and Soviet arms control negotiations. Dallin was an American historian and political scientist.