The Blue Diamond History Committee Collection (1920s-2012) contains materials related to the history of the Blue Diamond Mine and nearby village located about twenty-five miles outside of Las Vegas, Nevada. The collection contains materials including environmental reports, photographs of the mine and its employees and their families, maps, a photocopy of a diary, mine operation records and accident reports, community calendars, and correspondence and property documents of the local post office.

The Benedict Family Papers materials date from roughly 1905-1998 and are comprised of correspondence and letters (1969-1971) written to Howard Hughes by the public. The collection also contains correspondence written to Robert Maheu, former chief executive of Nevada operations for Howard Hughes. The collection also includes a variety of casino and gambling related product catalogs, gaming guides for Las Vegas casinos, and of research papers and reports primarily relating to sports betting and cheating.

The Linda Miller Papers (2008 to 2023) document Dr. Linda Miller's historic preservation work in Las Vegas, Nevada including her work portraying early Las Vegas resident, Helen J. Stewart, at historical events across Southern Nevada. The collection documents Miller's efforts to erect a statue of Helen Stewart at the Las Vegas, Nevada Old Mormon Fort, as well as her contributions to the programming for Sarah Winnemucca Day in 2018. The collection documents Miller's appearances as Helen J. Stewart through photographs, pamphlets, video recordings, digital files, and curriculum used for her outreach work. The collection also documents Dr. Miller's activities as chair for the Nevada State Society chapter of the National Society of the Daughters of the American Revolution (NSDAR).

The J. Ross Clark Scrapbook dates from approximately 1897 to 1972 and consists of newspaper clippings collected by his wife, Miriam Evans Clark. The clippings relate to professional events in the lives of J. Ross Clark and his brother, Senator William A. Clark. A small number of the clippings refer to births, marriages, and deaths in Miriam Evans and J. Ross Clark's families. Also included are documents written by J. Ross Clark's grand-niece, Dorothy Murdock Dunkley, that offer additional information about the Clark and associated families.

The Nevada Federation of Women's Clubs (NFWC) Records date from 1907 until 1999 and document the administration, activities, and publications of the NFWC. During the twentieth century, the NFWC included member clubs from throughout the state of Nevada including the Mesquite Club in Las Vegas, the Reno Women's Civic Club, and the Lamoille Women's Club. The collection includes meeting minutes and agendas, correspondence, publications, reports, and newspaper clippings.

The Leon Rockwell Photograph Collection (approximately 1850-1979) contains black-and-white photographic prints, negatives, and slides, as well as postcards and tintypes. The images portray the lives of the Rockwell family in southern Nevada, their travels throughout New York and the western United States, and their immediate and extended family members. Also included are images of the volunteer and early firefighters of Las Vegas, Nevada, the Rockwell's family cabin at Mount Charleston, Nevada, and the Rockwell family home in Las Vegas. Portions of the images are from the Rockwell family travels across Nevada, Utah, New Mexico, Arizona, and California and depict historic locations such as Cove Fort, Utah; Rhyolite, Nevada; and Pueblo Grande de Nevada.