An image of Rotary Club members having lunch at Boulder Dam while an unidentified man gives a speech. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

An image of Rotary Club members having lunch at Boulder Dam while an unidentified man gives a speech. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

An image of Rotary Club members having lunch at the Boulder Dam. Earl Brothers is also present in this photo. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

A shot of cars, trees, and buildings; Boulder Dam Hotel can be seen in the background across the road from a building sign advertising "free Boulder Dam motion pictures".

An image of the Boulder Dam. The name was officially changed to Hoover Dam in 1947. Text from postcard: "Upstream face of Boulder Dam. Note roadway which connects Kingman, Arizona, and Boulder City, Nevada. Six Companies Inc. Photo."

Pg.22 #2546 Looking upstream toward Nevada Power House, showing 18-ft. penstock openings. Feb. 20, 1934. Pg.22 #2545 Boulder Dam looking upstream from Lower Cofferdam, showing Power House footings and benches. Feb. 29th, 1934. Pg.22 #2547 Looking upstream toward the Arizona Power House, showing 18-ft. penstock openings. Feb. 20th, 1934. Pg.22 #2538 Looking downstream over top of Boulder Dam, showing Lomix unloading trestle. Feb. 20th, 1934.