Citizen Alert is a Nevada-based environmental organization established in 1975 in response to Yucca Mountain being considered as the repository for the nation's nuclear waste. The records in the collection date from 1971-1999, with the bulk of the records from 1988-1996 and focused on issues of concern to Southern Nevada. The collection includes a large subject and administration file containing the organization’s mailings, fliers and newsletters regarding environmental issues and events, newsletters of other environmental organizations, press releases and brochures from a number of government agencies, and newspaper clippings on specific environmental topics. The collection also contains a number of environmental reports from federal, state, and local agencies as well as a number of conference and activist packets.

The D. Kenneth Richardson Papers on the Hughes Aircraft Company (1950-2011) contains correspondence, speeches, photographs, Hughes Aircraft Company executive meeting notes, and various publications from Hughes Aircraft Company and other aeronautical companies. Also included are published papers written by Richardson and a productivity study published by the Hughes Aircraft Company.

The Helen J. Stewart Papers (1869-1978) document the life of Las Vegas, Nevada pioneer, Helen J. Stewart. It includes correspondence between Stewart and her children as well as various family legal papers and certificates. The collection also contains Helen J. Stewart's 70th birthday scrapbook, a ledger, and a day book from 1904-1919, as well as several photograph albums and information related to the family burial plot.

The Florence Lee Jones Cahlan Photographs depict locations and events in Las Vegas, Nevada from 1909 to 1980. The photographs primarily depict historical locations, including the Las Vegas Mormon Fort, the Kiel Ranch, and plaques commemorating Las Vegas’s 75th anniversary. The photographs also depict celebrations, including the Diamond Jubilee festivities held to celebrate Las Vegas’s 75th anniversary, plaque dedications, building dedications, and the 50th anniversary of the arrival of the first mail planes in Las Vegas. The photographs include the Kennecott Copper Corporation’s facilities in McGill, Nevada, Western Airlines planes and pilots, and Union Pacific Railroad locomotives.

The Ham Family Photograph Collection contains five photographic albums primarily featuring images of the Ham family's travels throughout the western United States and Artemus W. Ham Jr. and Betty Ham Dokter during their childhood between approximately 1900-1949. Also included is one photograph used as a Christmas greeting for the Ham family from 1981. The photographs feature locations including Cedar Breaks National Monument, Utah; Grand Canyon, Arizona; and Yosemite National Park, California. The collection also contains photographs of the Ham family at Mormon sites throughout Utah. Lastly, there are postcards and photographs of locations throughout the United States, Germany, and Japan.

The University of Nevada, Las Vegas Photograph Collection (approximately 1900-2004) depicts the development of the university and the city of Las Vegas. The collection includes images of campus buildings, student activities, sports teams, past university presidents, and Las Vegas in the early twentieth century. Early images depicting the surrounding area are included in this collection as well.