The MacDonald Ranch Architectural Records contain master plans, architectural drawings, civil drawings, and landscape drawings primarily detailing the community development process of MacDonald Ranch, one of the oldest and most affluent master-planned communities in Clark County, Nevada between 1972 to 2007. Included are also drawings for MacDonald Highlands and Green Valley Ranch.

The Southern Nevada Daughters of the American Revolution Records primarily document the activities of three Southern Nevada chapters of the National Society Daughters of the American Revolution from 1950 to 2024. The materials center around the records of three chapters from Southern Nevada: Old Spanish Trail, Francisco Garces, and Valley of Fire. Materials include administrative records, scrapbooks, photographs, news clippings, and correspondence about the activities of the Daughters of the American Revolution chapters. Mateirals also include some records and scrapbooks from the Nevada State Society of DAR.

The Dorothy Dorothy papers (approximately 1913-1986) document the life of singer, songwriter, columnist, pilot, and farmer, Dorothy Dorothy. Materials contain genealogy records, correspondence, business and organizational records, local history, sheet music, artifacts, and two boxes of photographic prints. Also included are materials relating to her active involvement with animal rights campaigns.

The Ruby Duncan Photograph Collection on Operation Life (1970s-1980s) is comprised primarily of photographic prints with some corresponding 35 mm negatives of Ruby Duncan and other Operation Life organizers, as well as important organization buildings. Materials include photographs of Ruby Duncan, Aldine Weems, Renee Diamond, and Jack Anderson in the original Operation Life Las Vegas, Nevada Operation Life headquarters and the regional office in San Francisco, California. Also pictured are other employees and beneficiaries of the organization at a Christmas Party.

The Mike O'Callaghan Professional Papers (1943, 1968-2004) mainly consist of research files gathered by Mike O'Callaghan in his post-political capacity as executive editor of the Las Vegas Sun as well as owner and publisher of the Henderson Home News, Boulder City News, and Green Valley News. The papers also contain handwritten and typewritten drafts of O'Callaghan's "Where I Stand" article for the Las Vegas Sun, along with his reporter's notebooks, monthly planners, and photographic prints. The research files cover a wide variety of topics, including but not limited to environmental issues; nuclear waste; state and local politics; military and veterans affairs; foreign relations including Israel, Iraq, and Korea; and education. The collection also contains copies of speeches given by O'Callaghan as the 23rd Governor of Nevada between 1971 and 1979, some of which contain handwritten notations.