Oral history interviews with Lillian Whalen conducted by Laura Bell on September 21, 1974 and November 22, 1974 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Whalen discusses her personal history in Boulder City, Nevada since the 1930s. Whalen then describes social life, the increase of local businesses, and the overall growth of Boulder City.

The Harrah’s Entertainment Corporate Archives (dating from 1811 to 2004 with the bulk of the materials dating from 1940 to 2000) contain the promotional and corporate files of Harrah’s Entertainment Inc. and its predecessors, as well as Bill Harrah’s personal papers and card game collection. The materials were compiled and developed as a corporate archive by Harrah's Entertainment, Inc.’s Corporate Communications Department. The collection is primarily comprised of casino and employee periodicals, reports, manuals, promotional files, ephemera, and newspaper articles that document Bill Harrah’s casinos in Reno, Nevada and Lake Tahoe as well as Harrah’s Inc., Holiday Inns, Inc., Holiday Corporation, the Promus Companies, and Harrah’s Entertainment, Inc. Also included are photographs that document the construction of Harrah’s properties, business operations, the people who worked and performed at Harrah’s properties, and Bill Harrah’s automobile collection. The collection also contains Bill Harrah’s collection of playing cards and card games. Also included are photographs of the Harrah family.

Oral history interview with Roxton Whitmore conducted by his grandson, Mark Whitmore, on October 22, 1972 for the Ralph Roske Oral History Project on Early Las Vegas. In this interview, Whitmore discusses his personal life, including his marriage and his political affiliations. Whitmore also describes the atomic bomb tests and automobiles.