The collection contains Internal Discussion Bulletins and Pre-Conference Discussion Bulletins published by Revolutionary Communist Youth (RCY), and Internal Discussion Bulletins and one Young Communist League Bulletin published by the Spartacus Youth League (SYL). Both organizations served as the national youth group for the Spartacist League of the U.S., a Trotskyist political organization, from 1971-1986.

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 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.

This collection contains bulletins, pamphlets, articles, and one conference transcript that reflect the theoretical sentiments and organizational activities of the Spartacist League of the U.S. The League was officially formed in 1966 by expelled members of the Revolutionary Tendency within the Socialist Workers Party. It is the United States section of the International Communist League (Fourth International).

The collection contains correspondence, reports, draft resolutions, bulletins, minutes, plenum and convention documents, and subject files related to Socialist Action, a Trotskyist political organization.

The collection reflects the activities, statuses, and principles of the Revolutionary Socialist League, a Trotskyist organization that advocated for the unification of the working class, the rebuilding of the Fourth International, and for championing various social causes. It contains Internal Discussion Bulletins, reports, newsletters, position papers, and one Politial Resolution from the organization's Founding Convention.

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.