Abstract: Records of a Russian-born, New York bookseller with interests in radical political organizations. The collection consists of business correspondence, booklists and catalogues issued by Kramer, photographs of the Kramer family, and miscellaneous printed material produced by mainstream and radical American political parties.

The political ephemera in the collection includes meeting announcements, party and union memberships, as well as photographs and postcards from political organizations such as the United States Socialist Party, the International Socialist Party, the Communist Party, Workers Parties, and union organizations. The remainder of the collection consists of educational materials produced by workers' education organizations in the 1920s and 1930s.