A colored postcard showing an artist's representation of Boulder Dam, later known as Hoover Dam, in Black Canyon, with Fortification Mountain lying in background. 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.
An image of unidentified guests sitting and listening to speeches at Boulder Dam's decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of unidentified guests sitting and listening to speeches at Boulder Dam's decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.