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.

The Neon in Nevada Photograph Collection contains black-and-white and color photographic slides of neon signs from cities and towns in Nevada dating from 1913 to 1989. The collection includes slides from Las Vegas, Reno, Boulder City, Laughlin, Henderson, Lovelock, Winnemucca, Elko, Wells, McGill, Ely, Eureka, Austin, Hawthorne, and Carson City. The collection also includes slides from the Young Electric Sign Company (YESCO) that depict the "sign graveyard" in Las Vegas, Nevada of broken and retired neon signs.