The Mike O'Callaghan Professional Papers (1943, 1968-2004) mainly consist of research files gathered by Mike O'Callaghan in his post-political capacity as executive editor of the Las Vegas Sun as well as owner and publisher of the Henderson Home News, Boulder City News, and Green Valley News. The papers also contain handwritten and typewritten drafts of O'Callaghan's "Where I Stand" article for the Las Vegas Sun, along with his reporter's notebooks, monthly planners, and photographic prints. The research files cover a wide variety of topics, including but not limited to environmental issues; nuclear waste; state and local politics; military and veterans affairs; foreign relations including Israel, Iraq, and Korea; and education. The collection also contains copies of speeches given by O'Callaghan as the 23rd Governor of Nevada between 1971 and 1979, some of which contain handwritten notations.

The Las Vegas, Nevada Anti-Gay Counter-Protest Collection (2001) documents the counter-protests against supporters of Reverend Fred Phelps of the Westboro Baptist Church at their anti-homosexual demonstrations. The counter-protests were held at the University of Nevada, Las Vegas campus and the Liberace Museum on March 10, 2001. Materials in this collection included a typed excerpt from the journal of Dennis McBride recounting his experiences on the day of the protest. Also included are photographic prints of counter-protestor Joshua Dart at the demonstration, a poster from the demonstration, correspondence between McBride and Dart, and an issue of the Rebel Yell featuring a front page article about the demonstration.

The Story of Classic Las Vegas Oral History Interviews (approximately 1950-2006) is comprised of raw and edited video recordings of oral history interviews used for The Story of Classic Las Vegas documentary which was produced, directed, and edited by Lynn Zook. The documentary offers first person historical overviews of what it was like to live in Las Vegas, Nevada from the 1920s to the 1970s. Individuals interviewed include a wide range of community members of the Las Vegas Valley including business owners, educators, entertainers, politicians, gaming professionals, casino workers, and activists. Materials also include a media kit with promotional materials and interview transcript for one of the interviewees, Betty Willis.

The collection is comprised of the records (1994-2012) for the Brandeis National Committee-Las Vegas Chapter. The collection is primarily comprised of publicity and marketing for events organized by the group, chapter newsletters, membership information, and study guides. Also included are the Brandeis National Committee-Las Vegas Chapter's policies handbook, bylaws, and certificates of commendation and proclamations.

The Building Las Vegas Web Archive is comprised of archived websites captured in 2017 that are related to UNLV University Libraries documentation project, Building Las Vegas. Archived websites represent architecture firms, construction companies, and housing developers in the Las Vegas Valley. This collection includes websites for organizations such as Mark L. Fine & Associates, Klai Juba Wald Architecture, Southern Nevada Home Builders Association, and AIA Las Vegas.

The UNLV Libraries Collection of Gambling Related Sheet Music (1890-1987) consists of primarily early 20th century American gambling-related sheet music. This collection is most noteworthy for the covers' bright and colorful imagery, including white gentlemen playing cards, imagery from card and related games, and some with offensive stereotypes and caricatures of African Americans. The material was created by a wide range of designers, composers, and publishers from various places, including New York, New York; Chicago, Illinois; St. Louis, Missouri; Detroit, Michigan; and Williamsport, Pennsylvania. This collection contains illustrations which depict Black and Asian individuals in racist caricatures, photographs of white individuals wearing blackface, and some song titles include derogatory language or racial slurs.