From the Ralph Roske Oral History Project on Early Las Vegas, OH-01039. On March 25, 1981, collector Sonny Neighbors interviewed his mother, Margo Knowles (born October 13th, 1935 in Cedar Rapids, Iowa) at her home in Las Vegas, Nevada. Margo speaks about growing up and going to school in Las Vegas. She also discusses her work as a telephone operator in Las Vegas, and at the Nevada Test Site in Nye County, Nevada.

On March 18, 1978, Susan Scott interviewed Thalia Dondero (born 1921 in Greeley, Colorado) about her experiences in Nevada and more specifically about her work as a Clark County Commissioner. Dondero first speaks about her background and the circumstances which led her to move to Las Vegas. She also talks about her children, her work with the Parent-Teacher Association, and her service with the Nevada State Park Commission. She also mentions some of her lobbying work for the development of state parks, including a project by National Geographic in which she visited multiple parks, and she later describes the development of the Las Vegas Strip. At the end of the interview, Dondero talks about her involvement in various organizations, her consideration for running for governor, and some of the topics she handles as a commissioner for the county.

On February 10, 1977, Frederick Dougan interviewed Russell Grater (born 1907 in Lebanon, Indiana) about his career in the U.S. National Park Service. Grater first talks about his move to the Southern Nevada area and his work that impacted the Hoover 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 dam project, and vegetation in the area.