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 Howard Booth Papers are comprised of the personal papers of environmental activist Howard Booth from 1964 to 2017. The collection includes information about Booth's efforts to help turn Red Rock Canyon into a National Conservation Area. Booth was a member of multiple conservation organizations and the collection includes meeting minutes and newsletters from the Toiyabe chapter of the Sierra Club. The collection also contains correspondence, newspaper clippings, official reports, newsletters, and meeting minutes collected by Booth from various environmental organizations. The papers also include numerous photographic slides with handwritten captions Booth took of Red Rock and the surrounding area from the early 1980s to 2000s.

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.