Correspondence, writings, police reports, printed matter, motion picture film, still photographs, and slides, relating to Leon Trotsky and Trotskyism, especially in China and the United States, to the Trotskyist C. Frank Glass, and to Rayna Prohme, revolutionary American journalist in China. Includes film and photographs of Leon Trotsky and members of his entourage in Coyoacan, Mexico, 1939-1940, Shanghai and other areas of China, ca. 1934-1939, including scenes of the bombing of Shanghai, 1937, and executions of leftists in China, ca. 1927-1932; and a sound recording of a telephone address to followers in the United States made by Trotsky from Mexico in 1938.