The Alan Byron Olson Photographs (approximately 1933) consist of one negative album containing 100 photographic negatives taken by Alan Byron Olson around 1933 that depict the Hoover Dam (then known as Boulder Dam) and the Boulder City Hospital. Olson was a medic for the Boulder City Hospital and the images also depict various hospital staff and other locations related to Hoover Dam. The collection also includes digital copies of the negatives.

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.

The Franklin M. Murphy Photograph Collection, dates from approximately 1929-1933 and consists of black-and-white photographic prints with 27 corresponding negatives. The majority of the images show locations in and around the current site of Hoover Dam and Lake Mead in southern Nevada and Arizona with a focus on the geology of the area; a smaller number show individuals and locations in Las Vegas, Nevada.

The Ruthadele Stearns Doyle Lathrop Personal Papers (1900s-1991) contains scrapbooks, slides, and matted competition photographs created by Ruthadele Stearns Doyle Lathrop, a photographer and ballroom dancer. The scrapbooks include photographs of Ruthadele’s family, travels, and ballroom dance competitions, as well as newspaper clippings and other ephemera. The slides and matted photographs consist mostly of Western landscape scenes, including California and Nevada.

The Daughters of Union Veterans (DUV) of the Civil War, Las Vegas, Nevada Records comprise various materials from the organization ranging from the years 1861 to 1970, with a bulk of the material dating from 1948 to 1954. The contents consist of a scrapbook of memorabilia and newspaper clippings, magazine articles profiling the Grand Army of the Republic, reissues of Harper’s Weekly from 1861, and the correspondence and ephemera of Henrietta Denny.

The Franklin M. Murphy Geological Papers (1919-1956) contain surveys, lectures, reports, correspondence, newspaper clippings, bulletins, maps, and dam site investigations from six different states in the American west. Also included are mining projects, photographs, scrapbooks, albums, school papers, and Murphy's thesis.