This collection contains pamphlets, manuscripts, correspondence, and ephemera related to labor movements and issues, Anarchism, Communism, Marxism, Socialism, Trotskyism, civil rights, anti-war and peace movements, the Soviet Union and the Russian Revolution, and related subjects in the arts, sciences, religion, sports, economics, education, and government.

The collection contains bulletins and reports by International Socialists, a third camp Trotskyist organization in the United States.

The collection comprises the papers of Asher Harer, a member of the Socialist Workers Party and Socialist Action, as well as a trade unionist and anti-Vietnam War activist. It includes correspondence, photographs, reports, resolutions, minutes, notes, study guides, flyers, newsletters, leaflets, newspapers and newspaper clippings, and scrapbooks.

This collection includes material collected by Lyle Fulks, a member of the Socialist Workers Party and Solidarity. It includes material from other Socialist organizations, such as Workers Power, Socialist Action, and International Socialist. Besides material related to Socialist organizations, the collection also includes teaching syllabi, articles, personal material, and other subjects related to Socialism, Communism, Marxism, labor, and social justice.

The collection contains the papers of Meryl and Manny Sunshine, socialist activists who were members of the Freedom Socialist Party, Radical Women, the Committee for a Revolutionary Socialist Party, the Peace and Freedom Party, and other organizations. It includes subject files, convention and conference materials, leaflets, photographs, bulletins, reports, memoranda, press releases, minutes, publications, election materials, and draft proposals.