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 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.

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