The Aplin Family Scrapbooks (1927-1971) consists of four handmade scrapbooks compiled by Hilda Aplin. The scrapbooks contain photographs, correspondence, newspaper clippings, and handwritten captions. The majority of the collection focuses on Hilda and Charles Aplin’s involvement in the Fraternal Order of Eagles and Las Vegas Eagles Auxiliary #1213. Also included is a photograph album that details the family’s activities from 1927 to 1959, including notable locations around Las Vegas, Nevada such as Lake Mead, Hoover Dam, Mt. Charleston, and annual Helldorado parades.

The Ralph Roske Papers (1957-1989) consist of Ralph Roske's book manuscripts, lecture notes, and correspondence. The collection includes extensive lecture notes on the United States Civil War, United States history, and Nevada history. It also includes Roske's research and manuscripts on Nevada, California, and the United States Civil War, as well as student

papers. Ralph Roske was a professor of history at the University of Nevada, Las Vegas (UNLV).

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 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 Helen J. Stewart Photographs depict the Stewart Family from approximately 1860 to 1950. The photographs primarily depict Helen J. Stewart and her children as well as the Stewart Ranch (also know as the Las Vegas Ranch) in Southern Nevada. The photographs include the early Las Vegas, Nevada town site, landscapes of Southern Nevada and the American Southwest, mines and mining camps, railroads and railroad workers, the Las Vegas Fort (also known as the Old Mormon Fort), hotels and early businesses in Las Vegas, Native Americans and Native American artifacts, and postcards.