Correspondence, biographical material, writings, scrapbooks, subject files, newsclippings; pamphlets, manuals, and other printed materials; and memorabilia related to Belanger's union and election activities, and his work with various government agencies and commissions. Scrapbooks comprise the bulk of the collection and include correspondence, news clippings, photographs, postcards, and various memorabilia. Correspondents include: the U.S. Conciliation Service of the U.S. Department of Labor; the National War Labor Board; the War Manpower Commission of the Office for Emergency Management; the League of Women Voters of Massachusetts; the Council for Constitutional Reform in Massachusetts, Inc.; and The White House.