The Helen J. Stewart Papers (1869-1978) document the life of Las Vegas, Nevada pioneer, Helen J. Stewart. It includes correspondence between Stewart and her children as well as various family legal papers and certificates. The collection also contains Helen J. Stewart's 70th birthday scrapbook, a ledger, and a day book from 1904-1919, as well as several photograph albums and information related to the family burial plot.

The Jacob E. Von Tobel Photograph Collection contains black-and-white photographs of the pioneer Von Tobel family from 1900 to 1980. The collection includes photographs of the Von Tobel family, early Las Vegas, Nevada buildings and landmarks, and aerial photographs of Las Vegas and surrounding areas.

The James Cashman Sr. Photograph Collection (approximately 1905 to 1975) consists of black-and-white photographic prints, negatives, slides, and albums as well as a glass plate negative. The photographs depict four major subjects: Cashman's family, friends, and associates; Cashman's businesses; the Hoover Dam and Colorado River; and various locations across Nevada.

The Ham Family Photograph Collection contains five photographic albums primarily featuring images of the Ham family's travels throughout the western United States and Artemus W. Ham Jr. and Betty Ham Dokter during their childhood between approximately 1900-1949. Also included is one photograph used as a Christmas greeting for the Ham family from 1981. The photographs feature locations including Cedar Breaks National Monument, Utah; Grand Canyon, Arizona; and Yosemite National Park, California. The collection also contains photographs of the Ham family at Mormon sites throughout Utah. Lastly, there are postcards and photographs of locations throughout the United States, Germany, and Japan.

The Alice P. Broudy Papers on Broudy v United States (1940-2018) comprise materials collected and created by the wife of Charles A. Broudy during her effort to obtain compensation for his death in 1977, which she believed to be a result of repeated radiation exposure. Materials include government documents obtained through the Freedom of Information Act (FOIA), correspondence, memos, litigation papers, scholarly reports and articles on radiation exposure and its effects, congressional testimony, speeches, newspaper clippings, books and audiovisual materials. Also included are photographs, slides, and one box of Alice "Pat" Broudy's personal papers. There are two boxes of papers that remain unprocessed.