The Harry Hayden Whiteley Architectural Records are comprised of architectural records (1931-1970) created and/or maintained by the American architect Harry Hayden Whiteley and/or his architectural firm, known as Harry Hayden Whiteley and Associates. This collection includes 30.21 linear feet of materials including 45 items from over 30 projects. The collection focuses on his work in the Las Vegas and Reno, Nevada areas. The materials feature both architectural drawings and project files. Architectural drawings include pencil and ink on tracing paper preliminary sketches and mounted artist’s renderings used for presentations and promotional materials. Project files include project correspondence, photographs, and structural calculations. The drawings also contain work from the architect Paul Revere Williams. The collection includes architectural drawings for hotels, shopping plazas, residential developments, and office buildings.

The Las Vegas Ambassadors Collection (1968-1985) primarily consists of a scrapbook, newspaper articles, and photographs documenting the activities of the Las Vegas Ambassadors youth singing group. The materials were compiled by Harry LaFavor, the Ambassadors' business manager, who co-founded the group with Norman Kaye and Richie Astone to promote a positive image of Las Vegas. The collection also includes a songbook, vinyl record and ¼” tape recording, and promotional materials.

The Bill Hughes Photographs (approximately 1980-2012) contains negatives, slides, prints, proofs, and born digital images created by local photographer and photojournalist Bill Hughes for publications including Las Vegas CityLife, Las Vegas Business Press, Las Vegas Weekly, as well as commercial clients. A portion of prints in the collection consist of modeling photographs Hughes took as part of his business. The digital images represent a variety of clients, and feature local bands, DJs, and performers in nightclubs and bars on the Strip and downtown Las Vegas. Also included in digital files are portraits, artistic photographs and self-portraits, and material used for Las Vegas Weekly, CityLife, and Business Press.

The Joanne de Longchamps Papers date from 1938 to 1985 and document de Longchamps' career as a poet as well as her personal life. The collection contains photocopies of her published poems, poetry journals and magazines containing her work, and photocopies of her unpublished typewritten poetry. It also contains original correspondence from Joanne de Longchamps to her mother, Ruth Cutten, as well as photocopies of her correspondence to poet Harold Witt.

The Gay and Lesbian Community Center of Southern Nevada Photograph Collection contains mainly candid photographs of events and individuals affiliated with the Las Vegas-based Gay and Lesbian Community Center of Southern Nevada (GLCCSN) dating from 1993 to 2000. Photographs depict events honoring prominent members of the gay, lesbian, bisexual, transgender, and queer community; meetings at GLCCSN; and candidate nights for members of the community running for public office. The collection also includes a number of photographs of the Freedom to Marry celebration at the GLCCSN and the Gay Pride Las Vegas festival from 1998 to 1999.

The Blue Diamond Mine Corporate Records (1918-2005) consist of operational and organization records of the gypsum mining and milling operations located in southwest Clark County, Nevada. Materials include operational records related to individual boring sites at the mine; milling operations and statistics; and equipment operations and statistics, including maps, field notebooks, and photographs. There are also daily, weekly, and monthly organizational records related to employee work schedules and safety reports for the mining operations, including accident reports and a safety education training program.