The Las Vegas Professional Sports Teams Collection (1988-2008) consists of brochures, ephemera, and programs from various Las Vegas, Nevada sports teams. Teams include the Coyotes, Dustdevils, Flash, Thunder, Silver Streaks, and Wranglers. The sports include basketball, ice hockey, inline hockey and indoor soccer.

The State of Arizona vs. State of California Proceedings Concerning the Colorado River Usage Dispute collection (1957-1961) contains supplemental documents from the Arizona v. California Supreme Court case that began in 1931 and ended in 2000, including briefs, objections, requests for admissions of facts, rebuttal outlines, witness outlines, comments, and requested findings of facts.

The University of Nevada, Las Vegas Phi Kappa Phi Records (approximately 1960-2019) consist of meeting minutes, correspondence, financial documents, member lists, programs, newspaper clippings, and photographic prints pertaining to the Honor Society of Phi Kappa Phi Chapter 100 at the University of Nevada, Las Vegas (UNLV). The collection also includes memorabilia from the organization's fiftieth induction ceremony, as well as a framed copy of its charter.

The C. C. (Clio Cline) Mobley Photograph Collection (approximately 1911 to 1917) consists of sixteen black-and-white photographic prints with corresponding photographic negatives. The images depict the Las Vegas, Nevada Ranch while the Mobley family leased it from the Union Pacific Railroad during the period. The photographs depict the home, swimming pool, the Old Las Vegas Mormon Fort, and orchards and streams on the property.