Oral history interview with Dorothy Thompson conducted by Patricia Moore on February 18, 1980 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Thompson discusses the growth of Las Vegas, Nevada. Thompson also describes her life as the wife of a railroad worker. She briefly discusses religion, specifically Mormonism.

Oral history interview with Lawrence Nelson conducted by John Turner on February 22, 1977 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Nelson discusses the history of early Las Vegas, Nevada. He talks about the Old Mormon Fort, the importance of railroads in Las Vegas, and the construction of the Boulder (Hoover) Dam.

Oral history interview with Mary Noblitt conducted by Mary Sawdey on March 13, 1981 for the Ralph Roske Oral History Project on Early Las Vegas. Noblitt discusses moving to Las Vegas, Nevada and building housing in the southern part of town. Noblitt goes on to discuss communication through railroad and morse code. Lastly, Noblitt discusses the above ground atomic tests.

Oral history interview with Brenda Arnold conducted by Janet E. Prince on February 28, 1977 for the Ralph Roske Oral History Project on Early Las Vegas. Arnold discusses her career as a librarian, her religious activities in Las Vegas, Nevada, and viewing the above-ground atomic testing. She also recounts activities she did while visiting Lake Mead and Harris Springs at Mount Charleston.

The Ray Tutaj Jr. and Harv Kahn Photographs (approximately 1990-2009) contain photographs and videos taken by Ray Tutaj Jr. and Harv Kahn of the Union Pacific Railroad and trains throughout Las Vegas, Nevada and the southwest region. Tutaj and Kahn were friends who were railroad enthusiasts and hobbyist photographers. Materials include photographic negatives and prints as well as digitized photographs.

The Las Vegas and Tonopah Railroad Blueprints consists of twenty-four of the original thirty blueprints as part of the Interstate Commerce Commission (I.C.C.) Valuation Index Section I. They are labeled "Right-of-Way & Track Map, Las Vegas & Tonopah Railroad" and dated June 30, 1915. The blueprints contain four miles of railroad lines per sheet with a scale of 6 3/4 inches per mile. The collection also includes one sheet from the Bullfrog Goldfield Railroad company, which used the track, yard, and facilities of the Las Vegas and Tonopah and Railroad company between Beatty and Goldfield, Nevada.