A colored postcard showing an artist's representation of the downstream face of Hoover Dam and the Lake Mead Recreational Area in Black Canyon. Constructed in the 1930s, Hoover Dam crosses the Colorado River on the state line between Arizona and Nevada. Also considered to be an engineering wonder and the world's largest dam during its time of construction, Hoover Dam provides much-needed irrigation and hydroelectric power to the Southwest region of the United States. From this angle, intake towers can be seen sticking out of Lake Mead, along with the U-shaped power house at the base of the dam. Transcribed onto the bottom of the image: "Lake Mead Recreational Area."

A black and white image of the Board of Clark County Commissioners. From left to right, the men present are Esq. District Attorney Roland H. Wiley; Commissioner Harold J. Stocker; Chairman George T. Hanson; County Auditor and Recorder David Farnsworth; Commissioner E. F. Davison; and County Clerk Lloyd S. Payne. This photo was taken from a time capsule in the cornerstone of the Union Pacific Railroad station located in Las Vegas. The time capsule was placed there in 1940 and was later retrieved when the building was demolished around 1970.

Black and white image of several prominent figures, in front of a crowd outdoors. From left to right: Governor Balzar of Nevada; Carl Gray, President of Union Pacific Railroad Company; Ray Lyman Wilbur, Secretary of the Interior; Governor of Colorado (possibly Edwin C. Johnson). Gray is handing Lyman the first spike to be driven for the spur line to Boulder Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image of the Hoover Dam powerhouse. The Young Presidents' Organization arranged a party for nearly 1,000 people that was held on the powerhouse roof of Hoover Dam. The visitors, all wearing hard hats, were the first to use this setting. Tables, chairs, barbeque pits, a bandstand, and dance floor are visible on the powerhouse roof.

Black and white image of the Bureau of Reclamation Commissioner, Ellis L. Armstrong (right), greeting Art Linkletter (left) upon arrival to a party held by the Young Presidents' Organization. The party for nearly 1,000 people was held on the roof of the powerhouse at Hoover Dam. The visitors, all wearing hard hats, were the first to use this setting.

Black and white image, from left to right, of Art Linkletter, Dick Woodward, and Commissioner of the Bureau of Reclamation, Ellis L. Armstrong, at a party held by the Young Presidents' Organization. The party for nearly 1,000 people was held on the roof of the powerhouse at Hoover Dam. The visitors, all wearing hard hats, were the first to use this setting.

Las Vegas Rotary. From left to right: First row - 1) Will Beckley; 2) Ed Clark (?); 3) Boggs; 4) O. K. Adcock; 5) unknown; 6) Win. Ferron; 7) unknown; 8) Sam Lawnson; Second row - 1) E. W. Cragin; 2) Cyril Wengert; Third row - 1) Dr. Win. Park; 2) Dr. Mildren; 3) Bill Pike; 4) unknown; 5) unknown; 6) unknown; 7) C. P. Squires; 8) unknown; 9) Harry Blanding; 10) unknown; 11) Adams; 12) Ed Clark; 13) E. W. Griffith; 14) William Norton Schuyler; 15) Walter Bracken. ID by Sherwin Garside.