On November 25, 1974, collector James M. Greene interviewed Russell K. Grater (born November 16th, 1907 in Lebanon, Indiana) in his home in Boulder City, Nevada. This interview offers an overview of the United States Park Service. Mr. Grater also offers an overview on the history of housing developments in the Las Vegas Valley and Nelson Township. The interview concludes with discussion on the leaf system of local plants.

On February 7, 1977, collector Enrico Messina interviewed Edith Leavitt (born April 12th, 1924, in St. George, Utah) at her home in Las Vegas, Nevada. In this interview, Mrs. Leavitt talks about teaching in Southern Nevada, including in the Virgin Valley and in Las Vegas. She also discusses the changing education system in Southern Nevada during her time as an educator.