The Anita Freeman Photograph Collection on Southern Nevada (1937-1972) primarily contains black-and-white negatives depicting locations in Southern Nevada, including the Hoover Dam, Lake Mead, and Mount Charleston. The collection also includes black-and-white negatives of the Helldorado Parade held in Las Vegas, Nevada, as well as landscapes in Arizona, such as the Grand Canyon.

The Elton and Madelaine Garrett Photograph and Architectural Drawing Collection contains photographic prints and architectural drawings of Boulder (Hoover) Dam; Las Vegas, Nevada; Boulder City, Nevada; and other locations in the American Southwest from approximately 1927 to 1990. The photographs primarily depict Hoover Dam's construction and areas around Hoover Dam, Las Vegas, and Boulder City during the 1930s and 1940s. The bulk of the architectural drawings and maps are projects and diagrams related to the planning and development of Boulder City, Nevada between 1943 and 1985.

The Robert Woodruff Photograph Collection (1900s-1970s) consists of ninety-seven black-and-white photographs of locations and events in Clark County, Nevada. Locations include Las Vegas, Henderson, and Searchlight, Nevada, as well as the Hoover Dam. The majority of the images were taken between 1934 and 1962.

The Boulder City 31ers Photograph Collection depicts the construction of the Hoover (Boulder) Dam and the development of Boulder City, Nevada from 1930 to 1987. The photographs primarily depict construction of the Hoover Dam, but they also depict workers, dormitories, the Colorado River, stores, and Black Canyon.

The Irving Hirshon Photographs are comprised of 55 color slide photographs taken by Irving Hirshon in 1971 of Lake Mead, Hoover Dam, downtown Las Vegas, and the Las Vegas Strip. Hirshon is believed to have taken the slides in the summer of 1971 on a West Coast trip to celebrate his twenty-fifth wedding anniversary.

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 Frank D. Rathbun Photograph Collection dates from approximately 1915 to 1968 and consists primarily of black-and-white photographic prints and some corresponding negatives taken by Frank D. Rathbun and Michael Moen, who resurveyed the various sites Rathbun visited. The majority of the images depict petroglyphs located throughout the desert southwest in Nevada, California, and Arizona, as well as documentary images of the construction of the Los Angeles Aqueduct and the Hoover Dam transmission lines. Additional material includes postcards from areas Rathbun visited in California, Arizona, and Nevada.