Writings, correspondence, notes, memoranda, clippings, other printed matter, and audiovisual material, relating to Marxism; the international communist movement; communism in the Soviet Union, the United States, and elsewhere; literature and art in the Soviet Union and in Mexico; and the Mexican artist Diego Rivera. Includes some papers of Rivera, and papers of Ella Wolfe, wife of B. D. Wolfe. Sound use copies of selected sound recordings available.
Letters, memoranda, clippings, and photographs, relating to the service of H. Milton with the Partido Obrero de Unificación Marxista (POUM) militia during the Spanish Civil War, his acquaintanceship with the writer George Orwell in the POUM militia, and miscellaneous activities of the Fourth International. Includes letters by Leon Trotsky.