The Jack Kent Tillar Papers (approximately 1890-2010) are comprised of magic-related books, periodicals, pamphlets, ephemera, and artifacts from the estate of Jack Kent Tillar who was a composer and music editor for the film and television industry. Materials also include a small amount of Tillar's personal papers. Tillar was an amateur mentalist magician and wrote numerous books and articles on the subject of telepathy and mentalism including The Assumption Swindle, Trio: Three Complete Acts for the Mentalist, and Solo: The Walk-Around Mentalist.

The Sidney R. Whitmore Collection (approximately 1885-1970) contains land deeds and other documents about Mount Diablo, Nevada; documents detailing parts of his family history; and eight framed paintings of landscapes and portraits.