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 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.

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 contains minutes, discussion bulletins, agendas, notes, audiocassettes, subject files, a draft resolution, and one commercial lease document that reflect the founding and administration of the Socialist Workers Organization (SWO) from 2001-2004. The SWO is a Trotskyist political organization that was founded by expelled members of Socialist Action in 1999.

The collection comprises bulletins, convention and forum constitutions, programs, and leaflets, correspondence, reports, flyers, and subject files relating to the Socialist Workers Party (SWP), which was founded in 1928 by James P. Cannon.

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 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.

The collection comprises the papers of Nat and Sylvia Weinstein, members of the Socialist Workers Party and founding members of Socialist Action, as well as labor and women's rights activists. It includes reports, resolutions, article drafts, minutes, convention and plenum notebooks and reports, correspondence, speeches, statements, flyers, bulletins, announcements, pamphlets, and newspaper clippings.