An image showing a bird's eye view of cars driving on the crest of Hoover Dam. The text on the lower left corner of the image reads: Boulder Dam. Boulder Dam was officially renamed Hoover Dam in 1947.
The LeTourneau Construction Company building Black Canyon Highway to Hoover Dam site near Boulder City, Nevada. Image was taking in the summer of 1931.
An image of a Hoover Dam construction site, possibly at Basic Magnesium, Inc. in Henderson. Note: Boulder Dam was officially renamed Hoover Dam in 1947.