Oral history interview with Mike Markoff conducted by an unidentified collector on an unknown date in the 1970s for the Ralph Roske Oral History Project on Early Las Vegas. Markoff discusses the Boulder (Hoover) Dam from a construction worker's perspective. Markoff then discusses the negative environmental effects that casinos and other buildings had on Las Vegas, Nevada. Markoff later discusses hunting around the Las Vegas, Nevada area.

Oral history interview with Jean McColl conducted by Sam C. Melchiome Jr. on March 01, 1977 for the Ralph Roske Oral History Project on Early Las Vegas. In the interview, McColl discusses her childhood and family in Searchlight, Nevada and her eventual move to Las Vegas, Nevada in 1944. McColl also discusses her education, Boulder (Hoover) Dam, Mount Charleston, Lee Canyon, atomic testing, Las Vegas entertainment, and juvenile delinquency.

Oral history interview with Russell K. Grater conducted by Frederick Dougan on February 10, 1977 for the Ralph Roske Oral History Project on Early Las Vegas. Grater first talks about his move to the Southern Nevada area and his work that impacted the Hoover (Boulder) Dam project. He then talks about the town of St. Thomas, Nevada, the Lost City, and the activities of tourists. Grater also talks about his work in excavation, the indigenous American Indian tribes of the area, findings on petroglyphs, and the types of wildlife that were found in the area. He later talks about findings related to fossils, gold mining, the effects of World War II on the Hoover Dam project, and vegetation in the area.

Oral history interview with Ruth Hazard conducted by John Neal on March 08, 1975 for the Ralph Roske Oral History Project on Early Las Vegas. Hazard goes in-depth about her knowledge of municipal politics and her husband’s friendships with a number of Nevada politicians. Hazard also briefly talks about her fascination with the above-ground atomic tests, speakeasies during Prohibition, and local anxieties about Las Vegas, Nevada “losing its identity.”

Oral history interview with Dan Hill conducted by John L. Bennett on March 1, 1979 for the Ralph Roske Oral History Project on Early Las Vegas. Hill goes in-depth about his experience as a worker at the Nevada Test Site, and different mining sites that he had also worked at. The two briefly discuss the different sheriffs that had been in charge of Las Vegas, Nevada and how many people came to Las Vegas to work at the Henderson Magnesium Plant and Boulder (Hoover) Dam.

Oral history interview with Neil H. Holmes conducted by James Greene on January 14, 1975 for the Ralph Roske Oral History Project on Early Las Vegas. Holmes discusses the Boulder City, Nevada education system, family life, employment opportunities, housing, and the building of Boulder (Hoover) Dam.

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.