Abstract Manuscripts, notes, published research sources, correspondence, interviews, clippings, financial and employment records, legal papers, photographs, posters, original and reproduced graphic material, flyers, memorabilia and other material documenting the life of Harry Hay. Hay conceptualized and was a co-founder of the Mattachine Society (1950), the first organization to advocate defense of the civil rights of gays and lesbians on the grounds that they were an oppressed minority. He would...

Abstract Minutes, bylaws, correspondence, manuscripts, newsletters, financial records, legal papers, transcripts, pamphlets, flyers, clippings, sound recordings, and other papers relating to the Mattachine Society, brought together by the Mattachine Society Project from materials donated to ONE Institute (now ONE International Gay & Lesbian Archives) by Harold Call; from other collections held by ONE; and from collections in Jim Kepner's International Gay & Lesbian Archives. Founded in Los...