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 Margo Mansergh Papers (approximately 1920-2010) document the life of former showgirl and dancer Margaret "Margo" Mansergh Tomaszewski. Materials include photographs of Margo modeling, backstage at various shows, portraits, and personal family photographs as well as programs from her international career performing in the Lido de Paris and Pigalle Nightclub in London, as well as a number of shows in Las Vegas, Nevada, such as Vive Les Girls, Casino de Paris, Minsky's Burlesque, and Lido de Paris at the Stardust. The collection contains materials from Mansergh's modeling career, including photographs, book covers, and images of her as an extra in films. Digital images from the closing Stardust performance and an event for Miss Bluebell are also found in the collection.

The Boardwalk Hotel and Casino Records date from 1993 to 2005 and contain administrative files, gaming projects and systems files, promotional photographs, advertisements, and audiovisual materials pertaining to the Boardwalk Hotel and Casino. The collection also contains material for the Boardwalk under its various names, including the Boardwalk Hotel and Casino, Viscount Hotel, and Holiday Inn Casino Boardwalk.

The Syphus-Bunker Papers date from 1891 to 1994, with the majority of the collection consisting of correspondence between Mary Etta Syphus and John Mathieson Bunker from 1891 to 1895. The collection also contains correspondence from friends and relatives, and documentation related to Mary Etta Syphus' attendance at Brigham Young Academy Church Normal Training School. Other materials include family history information and two color photographs of family homes. The collection also includes typed transcripts of the correspondence.

The Jacob E. Von Tobel Photograph Collection contains black-and-white photographs of the pioneer Von Tobel family from 1900 to 1980. The collection includes photographs of the Von Tobel family, early Las Vegas, Nevada buildings and landmarks, and aerial photographs of Las Vegas and surrounding areas.