Includes correspondence, reports, financial records, administrative files, minutes of meetings, publicity materials, brochures, newspaper clippings. Correspondents include: Devere Allen, Dorothy Detzer, Alfred Hassler, Jessie Wallace Hughan, Abe Kaufman, Frederick J. Libby, A.J. Muste, Ray Newton, Mildred Scott Olmsted, John Swomley, E. Raymond Wilson, and M.R. Zigler.
Majority of material found within 1930-1969; Majority of material found within 1939-1955