UNLV Libraries Collection of Mandalay Bay Resort and Casino Promotional Materials and Reports includes annual reports, equity research reports, Securities and Exchange Commission Form 10-K, Securities and Exchange Commission Form 10-Q, press kits, press releases, and promotional materials for Mandalay Bay Resort and Casino in Las Vegas, Nevada, dating from 1996 to 2006.

The Lorelle Nelson Collection on Atomic Testing is comprised of newspaper clippings, magazine and journal articles, correspondence, press releases, fact sheets, fliers, informational handouts and booklets, and newsletters from approximately 1980 to 2009 concerning nuclear weapons testing at the Nevada Test Site, throughout the United States, and internationally. The collection includes information about anti-nuclear groups, committees, and associations, as well as information on the effects of radiation, nuclear fallout, lawsuits and court cases, events and protests, conferences, and local news coverage.

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 J. T. McWilliams Photograph Collection contains photographs and postcards from Nevada and Southern California from approximately 1900 to 1970. The materials include postcards depicting Las Vegas, Nevada casinos such as El Rancho Vegas and the Golden Nugget Gambling Hall. The materials also include postcards depicting towns and scenes in Nevada such as Carson City, Rhyolite, Red Rock Canyon, and covered wagons traveling to Las Vegas. Lastly, the materials contain several photographs of the McWilliams family, possibly while they were living in what is now Las Vegas, Nevada.

The Mildred Mann Papers (1915-1995) contain documents related to her involvement in teaching ceramics and her work with the Independent Order of Odd Fellows. Included are correspondence, newspaper clippings, magazines, certificates, childhood school materials, manuals, photographs, a scrapbook, and newsletters. There are also Clark County Community College (CCCC) class schedules, real estate papers, and membership lists.

The Peggy Hyde Phillips Papers (1929-1998) document the lives of Peggy Hyde Phillips, her first husband Charles, and her son Michael. Materials include family photographs, correspondence, newspaper clippings, and documents from Michael Hyde’s time as a student at the United States Air Force Academy. The collection also includes a near-complete run of issues from February 1, 1963 through May 8, 1964 of the Paradise Press weekly newspaper from Paradise, an unincorporated township in Clark County, Nevada.

The Johnnie Ray Music Scores contain hand-written musical scores from the musician Johnnie Ray that were created between 1958 and 1991. Johnnie Ray was a singer, songwriter, and pianist. He was most notable for the songs "Cry" and "The Little White Cloud That Cried."