The Stella Champo Iaconis Photograph Collection (approximately 1890-1950) contains four black-and-white photographic prints of the Helldorado Days celebration held in Las Vegas, Nevada and three photograph albums with family photographs. Included in the albums are images of Italian family members, and Stella and her sister Irene as young children on their family ranch in Southern Nevada in the 1920s and 1930s. The Champo family and other Las Vegas residents are prominently featured in photographs taken across Las Vegas, including at the Boulder Dam (Hoover Dam) dedication, the family's farm, and outside residences near downtown Las Vegas. The third album covers Stella Champo's personal life, with photographs of her first husband, Walter Cordano (married 1934-1942) and her second husband, John Iaconis. Included are trips to Los Angeles, California; Pioche, Ruth, and Goldfield, Nevada; and early downtown Las Vegas, including the Union Pacific Station. A partial inventory is available for the third album.

The collection is comprised of records of the San Pedro, Los Angeles & Salt Lake Railroad Company (1901-1976). The construction of this railroad led to the founding of Las Vegas, Nevada and the creation of the Empire Construction Company and Las Vegas Land and Water Company. The records document the company's operations and include correspondence and contracts relating to lots in the Las Vegas townsite, payments and accounts, invoices and other audit materials from 1905 to 1923. The collection also includes the records of the railroad agent at Arden Station, located ten miles south of the Las Vegas Station, which contain correspondence, ledgers, freight and way bills, shipping orders, and telegrams.

The Bob Stupak Professional Papers (approximately 1900 to 2007) primarily documents the career of Las Vegas, Nevada casino owner, Bob Stupak. The materials in the collection include the planning of two resorts in Las Vegas, Nevada created by Bob Stupak: Vegas World and the Stratosphere. The collection also includes planning materials for the Titanic Las Vegas, an unbuilt resort envisioned by Stupak. Planning and promotional materials for Stupak's resorts including photographs, memorabilia, audiovisual materials, advertising mockups, and architectural drawings. The collection includes several scrapbooks and photographs of Stupak and his wife Sandy at events around Las Vegas. The materials also document Stupak's political campaigns running for mayor of Las Vegas in 1983 and 1987 and lieutenant governor of Nevada in 2006.