Oral history interview with Morgan Mills conducted by Matthew Carr on March 26, 1981 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Mills discusses being involved in major projects in the Las Vegas, Nevada area while he was living in California. Mills also discusses Boulder City, Nevada and Reno, Nevada. He later discusses his career as an electrical engineer, as well as working on the Hoover Dam (Boulder Dam).

Oral history interview with Clark Crocker conducted by Monica Lehman on March 3, 1978 for the Ralph Roske Oral History Project on Early Las Vegas. Crocker discusses his family and educational background as well as his experiences attending school in California and Massachusetts. Crocker then describes the building of the Hoover Dam and his career as a teacher and school principal, as well as his thoughts and philosophies on how curriculum should be structured in schools. Crocker also discusses his work for the fire department in Pahrump, Nevada and his career as a frogman and navigator for the United States Navy during World War II.

Oral history interviews with Lee Tilman conducted by Dennis McBride on February 06, 11, 13, 17, and 22; May 28; and July 09, 1996 for the Boulder City Library Oral History Project. In the interviews, Tilman discusses his birth in Gooding, Idaho in 1913, his early life, and his arrival to Las Vegas, Nevada in 1931. Tilman then talks about his experiences mining, milling, and ranching before moving to Las Vegas. While in Las Vegas, Tilman was involved with construction of Hoover Dam (Boulder Dam) and labor issues. Later, Tilman describes fishing and boating in the Colorado River, working at a duplex mine in Searchlight, Nevada, and working at the Las Vegas Ice House. Lastly, Tilman talks about influential Boulder City residents he knew, his children, and the Stratosphere Hotel and Casino.

Oral history interviews with Paul M. Lytle conducted by Dennis McBride on March 08, 1996 for the Boulder City Library Oral History Project. In the interview, Lytle discusses his birth in Salt Lake City, Utah, his early life in Overton, Nevada, moving around the Southwest United States, and returning to Overton in the early 1930s to work with the Civilian Conservation Corps. Subjects Lytle also talks about in the interview include road and campsite construction at the Valley of Fire State Park, stories about associates and relatives, and being enlisted as a male nurse with the United States Army during World War II. Lastly, Lytle talks about the construction of an exhibit building at Hoover Dam (Boulder Dam) originally used as a headquarters for soldiers during World War II to protect the dam.