Correspondence, memoranda, orders, notes, and photographs, relating to activities of the American Volunteer Group in China during World War II, American foreign relations with China, 1946-1950, and conditions in China during the Civil War. Frillmann was American missionary in China, 1936-1941; chaplain, American Volunteer Group (Flying Tigers), 1941-1945; consular official in China and Hong Kong, 1946-1950.