The Leonard Blood Papers (1888-1962) consist photographs and personal documents from his work in the United States Navy, Las Vegas Labor Commission, and on the Boulder (Hoover) Dam in Nevada. The bulk of the papers date between 1930 to 1950. Included are correspondence, telegrams, newspaper clippings, a scrapbook, family photographs, and various ephemera.

Oral history interviews with Elton Garrett conducted by Dennis McBride on November 10 and 11, 1986 for the Boulder City Library Oral History Project. In these interviews, Garrett talks about hitchhiking into Nevada in 1928, the beginning of his journalism career in 1929, and the development and construction of the Hoover Dam and Boulder City. He relates anecdotes about events and people during this early period and talks about the choice of The Six Companies, Incorporated to build the dam. He continues, talking about the impact of prohibition, bootlegging, and illegal gambling before 1931. Later he talks about his work as an educator in Boulder City, and the decision by the city to work toward self-government and incorporation.

Oral history interview with Helen Cecil conducted by Susan Vogel on March 16, 1978 for the Ralph Roske Oral History Project on Early Las Vegas. Helen speaks about family life, education, employment and the growth and development of Las Vegas, Nevada. Helen talks about attending and working at Las Vegas High School. During the interview she also mentions the Boulder (Hoover) Dam, the Stewart Ranch, and the Westside.

Oral history interview with John P. Watkins conducted by Brian Watkins on March 04, 1979 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Watkins discusses his personal history and education in medicine. He then describes being one of the first urologists in Las Vegas, Nevada and recalls his experiences at various hospitals throughout the city. Later, Watkins discusses the first malpractice insurance available and why such insurance was important for private physicians. Lastly, Watkins describes the American Medical Association (AMA), construction of Hoover Dam (Boulder Dam), and the development of casinos on the Las Vegas Strip.

Oral history interview with Gordon Reno conducted by Brian Galvin on March 01, 1981 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Reno describes his early life living in Henderson, Nevada and watching the city of Las Vegas, Nevada expand over time. Reno discusses the Boulder (Hoover) Dam and how it was once heavily guarded, as well as Mormonism in Las Vegas. Reno also talks about being stationed at a U.S. Marine base at Lake Mead, his career as a police officer in North Las Vegas, and the Basque people and their influence in Nevada.

Oral history interview with George and Theona (Toni) Garner conducted by Rod Leavitt on March 25, 1987 for the Ralph Roske Oral History Project on Early Las Vegas. In the interview, George Garner discusses his father, who was a Boulder (Hoover) Dam worker and was one of the first homesteaders in the Ash Meadows area in southern Nye County, Nevada. George also describes the Ash Meadows Lodge, which was intended to be a dude ranch by Las Vegas, Nevada promoters. Lastly, George Garner briefly discusses his early life and education in Las Vegas, Nevada. Toni Garner briefly discusses her early life in St. Paul, Minnesota.

Oral history interview with Juanita Kilburg conducted by Vicente Camacho on March 07, 1981 for the Ralph Roske Oral History Project on Early Las Vegas. Kilburg discusses the Boulder (Hoover) Dam, McCarran International Airport, Nellis Air Force Base, living in Las Vegas, Nevada during the Great Depression, and casinos. The interview concludes with a discussion on her work with the American Legion service organization.