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.

The J. Ross Clark Scrapbook dates from approximately 1897 to 1972 and consists of newspaper clippings collected by his wife, Miriam Evans Clark. The clippings relate to professional events in the lives of J. Ross Clark and his brother, Senator William A. Clark. A small number of the clippings refer to births, marriages, and deaths in Miriam Evans and J. Ross Clark's families. Also included are documents written by J. Ross Clark's grand-niece, Dorothy Murdock Dunkley, that offer additional information about the Clark and associated families.