Oral history interview with Merle Frehner conducted by Robert Laas on July 05, 1975 for the Ralph Roske Oral History Project on Early Las Vegas. Frehner discusses atomic testing, freighting, the "Arrowhead Trail", the Great Depression, and Boulder (Hoover) Dam in Nevada.

Oral history interview with Elsie Whipple conducted by Hugo A. Cascos Jr. on March 22, 1978 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Whipple discusses Southern Nevada history and recalls the construction of Boulder (Hoover) Dam. Whipple also recalls the first hotels and casinos to open on the Las Vegas, Nevada Strip, and her work as a missionary with the Mormon Church.

Oral history interview with Helen Manix conducted by James M. Greene on December 06, 1974 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Manix talks about the history of Boulder City, Nevada. She specifically talks about living conditions and her role as a mother in early Boulder City. She also talks about the Boulder (Hoover) Dam construction.

Oral history interview with Dal Peterson conducted by Daion Dall on February 28, 1977 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Peterson recalls the opening of Boulder (Hoover) Dam, and the significance of the Helldorado Parade. Peterson later discusses environmental and social changes throughout Las Vegas, Nevada.

Oral history interview with Stella Iaconis conducted by Gary Gione on February 26, 1976 for the Ralph Roske Oral History Project on Early Las Vegas. Iaconis talks about seeing the above-ground atomic tests in Southern Nevada from Los Angeles, California and the drastic population growth that occurred after the construction of Boulder (Hoover) Dam.

Oral history interview with Leo Dunbar conducted by Dennis McBride on June 16, 1986 for the Boulder City Library Oral History Project. In this interview, Dunbar gives a brief history of the Bureau of Reclamation (Bureau of Land Management) and the beginning of his life-long career with that agency, first working on two major projects in Colorado. He then discusses how The Six Companies won their bid to build the Hoover Dam, the establishment of the federal reservation that would house Boulder City, and the growth and development of both the city and the dam project.

Oral history interview with Willis Evans conducted by Kathleen Morgan La Spina on December 02, 1986 for the Ralph Roske Oral History Project on Early Las Vegas. Evans discusses arriving and living in Las Vegas, Nevada. Evans also discusses being involved in the civic organization, District Attorney Youth Advisory Group. The interview concludes with a discussion of Boulder (Hoover) Dam, and changes in Las Vegas’ economy, politics, and environment.