The Morgan Sweeney Photograph Collection (approximately 1922-1969) consists of black-and-white photographic prints of Boulder City, Nevada, and Lake Mead and Hoover Dam areas, located on the border between Arizona and Nevada. The images depict the interior, exterior, and construction stages of Hoover Dam (Boulder Dam). There is also an aerial photograph of Boulder City, Nevada.

The Harrah’s Entertainment, Inc. Photograph Collection contains black-and-white and color photographic prints, negatives, postcards, and slides of William "Bill" Harrah at events in Nevada between approximately 1930 and 1991. Also included are views of Harrah’s Nevada properties including Harrah’s Lake Tahoe Hotel and Casino, Harrah’s Reno Hotel and Casino, and the Holiday Inn Hotel and Casino (that later became Harrah’s Las Vegas Hotel and Casino).

The Spencer and Georgia Hanna Butterfield Photograph Collection (approximately 1900-1978) consists of black-and-white photographic prints and negatives of the Hanna and Butterfield families. It also contains images of early and prominent residents of Las Vegas, Nevada such as James Cashman Sr., Las Vegas Chamber of Congress members, Union Pacific Railroad president George Ashby, and many other notable persons from early Las Vegas. The collection also includes photographs taken in Elko County, Nevada, the Hoover Dam, and other Las Vegas area images.