Abstract Correspondence, manuscripts, financial records, family papers, notes, clippings, paste-ups, legal papers, flyers, erotica, photographs, slides, home movies, videotapes, memorabilia, card catalogs, and other material created or collected by gay activist, publisher, and businessman, Harold (Hal) Leland Call. One of the founding members of the San Francisco chapter of the Mattachine Society, Call created and edited the Mattachine Review, one of the earliest...