The John Wittwer Collection on Agriculture in Nevada (1898-1972) contains the professional papers and records of John Wittwer in his capacity as an Agricultural Extension agent for the University of Nevada from 1921 to 1954. The records are primarily annual reports containing text, photographs, newspaper clippings, and charts that provide a rich chronicle of the conditions of agriculture and ranching in southern Nevada from 1898 to 1972, with the bulk of the material dating from 1929 to 1955. These conditions span water issues, such as flood control and irrigation, to the general difficulties of sustaining agriculture and viable food production in a desert environment. The reports come from the Agricultural Experiment Stations in Clark and Lincoln counties and most contain both a statistical report and a narrative summary.

The Stuart and Flora Mason Photographs (1940-1999) contain photographs of hotels, casinos, and other buildings constructed by Taylor International Corporation, which was owned by the Mason Family. The photographs depict the Aladdin, Venetian, Tropicana, Riviera, MGM Grand, and International hotels and casinos in Las Vegas, Nevada. The photographs also depict buildings in Miami and Coral Gables, Florida, and San Juan, Puerto Rico.

The Young Audiences New York, Nevada Humanities Photograph Collection (approximately 1970-1979) contains black-and-white photographic prints, slides, and negatives of the Las Vegas, Nevada chapter of the Young Audiences New York arts organization. Images include scenes of concerts, workshops, and chapter outings at public parks. There are images of specific bands within the chapter such as the Brass Quintet, Vocal Quartet, and Woodwind Quintet. Lastly, there are images of celebratory banquets honoring members of the Las Vegas chapter.