The Rico Izaguirre Collection of Harrah’s Entertainment Records (approximately 2003-2009) is comprised of records relating to employee engagement initiatives specific to the Atlantic City, New Jersey properties operated by Harrah’s Entertainment, Inc. The initiatives include “Winning Together,” a program intended to boost employees’ political engagement during the 2004 election season in the United States, and “Code Green,” an environmental sustainability program. The materials consist of manager’s handbooks, strategic plans, correspondence, annual reports, awards, and marketing materials, such as posters and newsletters. The collection also includes digital design files for various internal communications and Code Green brochures, handbooks, and fliers.

The University of Nevada, Las Vegas Solar Decathlon Records (2013-2021) are comprised of records documenting the University of Nevada, Las Vegas's participation in the U.S. Department of Energy (DOE) Solar Decathlon collegiate competition. The collection includes records created by the 2013, 2017, and 2020 UNLV teams (Team Las Vegas) in designing and building their respective competition entries: DesertSol, Sinatra Living, and Mojave Bloom. Records include competition application files, working project files, As-Built submittal packets, and promotional and marketing files for the competition. The majority of records in this collection represent the 2017 competition. Archived websites and social media accounts associated with Team Las Vegas and the Solar Decathlon competition are also included in the collection. The records document Team Las Vegas's efforts in designing and building energy efficient homes for the Solar Decathlon competition.

The Six Companies, Inc. Hoover Dam Photograph Collection (1931-1935), consists of approximately 400 black-and-white photographic prints contained in two photograph albums and an additional twenty-one loose black-and-white photographic prints with ten corresponding photographic negatives.

The Howard Hughes Professional and Aeronautical Photographs contain black-and-white photographs of businessman and entrepreneur Howard Hughes and his companies from 1916 to 1997. The photographs primarily depict Hughes alongside his aircraft, including the XF-11 prototype reconnaissance plane and the HK-1 Hercules, better known as the "Spruce Goose" or "Flying Boat." The photographs also cover the companies owned by Hughes, including Hughes Tool Company, Hughes Aircraft Company, Hughes Electronics Corporation, and RKO Pictures.

The Robert Lang Professional Papers (1976-2020) mainly contain urban planning research and reports from former University of Nevada, Las Vegas (UNLV) professor and public policy expert Robert Lang. Materials represent different public policy related projects and issues Lang worked on when he was employed with the Fannie Mae Foundation in Washington, D.C., and Brookings Mountain West and the Lincy Institute at UNLV. Materials also include Lang's teaching files which include course syllabi, class presentation slides, and course readers. Research, notes, and drafts of Lang's books including Boomburbs: The Rise of America's Accidental Cities, Edgeless Cities: Exploring the Elusive Metropolis, and Blue Metros, Red States: The Shifting Urban-Rural Divide in America's Swing States are also represented in the collection. The collection also includes documentation for invited conferences and events documenting different conferences and events, copies of Black's Guide for commercial real estate in the United States.

The Maria Pogee Papers (1942-2019) document the life and career of Argentinian born dancer, choreographer, and actress, Maria Pogee. Pogee worked extensively in Argentina, Chile, Lebanon, around the United States and in Las Vegas, Nevada. Materials include press clippings, show programs, correspondence, and photographs representing Pogee's entertainment career such as her work in the stage production of Peter Pan and choreography for Juliet Prowse and Shirley MacLaine. Other materials includes various unproduced show concepts with designs, storyboards, and scripts that she worked on with costume designer José Luis Viñas. Materials also include scrapbooks documenting her dance career dating from 1952 to 2009 which contain original correspondence, programs, photographs, and newsclippings. Materials also document Pogee's life and career outside of entertainment including her work directing fashion shows, operating a tourism company, and as a yoga instructor.

The Tomiyasu Family Photograph Collection (approximately 1908 to 1991) consists of black-and-white photographic prints of the Tomiyasu family and their farming business in southern Nevada.