The Howard Booth Papers are comprised of the personal papers of environmental activist Howard Booth from 1964 to 2017. The collection includes information about Booth's efforts to help turn Red Rock Canyon into a National Conservation Area. Booth was a member of multiple conservation organizations and the collection includes meeting minutes and newsletters from the Toiyabe chapter of the Sierra Club. The collection also contains correspondence, newspaper clippings, official reports, newsletters, and meeting minutes collected by Booth from various environmental organizations. The papers also include numerous photographic slides with handwritten captions Booth took of Red Rock and the surrounding area from the early 1980s to 2000s.

The Howard Hughes Public Relations Photograph Collection depicts the activities of businessman Howard Hughes from 1930 to 1950. The photographs primarily depict aircraft flown by Hughes or designed by the Hughes Aircraft Company, including the XF-11 reconnaissance plane, the HK-1 Hercules (or "Spruce Goose"), and the Hughes H-1 Racer. The photographs also depict celebrations following Hughes's circumnavigation flight in New York City, New York and Chicago, Illinois in 1938. Lastly, the photographs include Hughes testifying in front of the Senate Special Committee to Investigate the National Defense Program in 1947.