An artist's color rendering of the downstream face of Hoover (Boulder) Dam. "Boulder Dam, Colorado River Project" printed on the front of the postcard.
Color image showing an artist's rendering of the Arizona Spillway and Highway Bridge at Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of Parker Dam on the Colorado River at the California-Arizona border, 155 miles downstream from Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.