The Dorothy Ray Photograph Collection on Southern Nevada, approximately 1900-1946, depicts infrastructure in Caliente, Nevada in the early to mid-twentieth century. The collection also contains images of a flash flood that occurred in 1905 in Carp, Nevada and Stine, Nevada that washed away roads and railroad tracks. This collection provides historical documentation about early to mid-century Caliente, Nevada.

The Don T. Walker Photograph Collection (1900-1995) is comprised of black-and-white and color photographs taken by or belonging to Las Vegas photographer and Nevada historian Don Travis Walker. The photographs taken by Walker include ghost towns in Nevada, Arizona, and California, as well as a series on Phil Benson, editor and publisher of the Southern Nevada Times. Other items in the collection include photographs taken by other people related to the Moulin Rouge Hotel in Las Vegas, various photographs of historic sites in Nevada, and a program from the Nevada State Museum and Historical Society for its "Moulin Rouge: History in the Making" exhibition.