The Las Vegas Ambassadors Collection (1968-1985) primarily consists of a scrapbook, newspaper articles, and photographs documenting the activities of the Las Vegas Ambassadors youth singing group. The materials were compiled by Harry LaFavor, the Ambassadors' business manager, who co-founded the group with Norman Kaye and Richie Astone to promote a positive image of Las Vegas. The collection also includes a songbook, vinyl record and ¼” tape recording, and promotional materials.

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.