The J. Ross Clark Photograph Collection (approximately 1900-1920) consists of black-and-white photographic prints and some corresponding negatives. Images depict J. Ross Clark, his wife Miriam Evans Clark, their grandson James Ross Clark II, and several unidentified individuals.

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.