The Arthur Walker Gregory Photograph Collection, approximately 1900 to 1920, consists of black-and-white photographic prints, and two corresponding negatives. Two of the images depict the first train to arrive in Las Vegas, Nevada from Salt Lake City, Utah in 1905, one with railroad employees in the foreground. The remaining images depict Arthur Walker Gregory’s class photographs at the Las Vegas Grammar School when he was in the first, third, and fifth grades.

The Las Vegas Land & Water Company Records from the Las Vegas Valley Water District (1918-1989) are primarily comprised of contracts, correspondence, and maps that document the establishment of a water distribution system in Las Vegas, Nevada that would provide water using the state's Colorado River allocation. The records include water main extension agreements, correspondence, and bills of sale for water main construction, as well as articles and correspondence documenting the groundwater shortage in Las Vegas. The collection also includes maps for water distribution systems and pipelines throughout the Las Vegas Valley.