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 comprises buttons, keychains, flags, banners, and black-and-white and color photographs, negatives and contact sheets related to various labor strikes, commemorative events, political party and labor union election campaigns, women's rights causes, anti-war activism and demonstrations, and socialist political causes.

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.