A colored postcard showing an artist's representation of water flowing over the spillway gates from Lake Mead into Hoover Dam, previously known as Boulder Dam, in Black Canyon. Transcribed onto the top border of the image: "Lake Mead Flowing over Spillway Gates, Boulder Dam."
An image of electric transmission towers in Black Canyon angled over the downstream side of Hoover Dam. The intake towers and traffic on the road over the dam face are visible. Note: Boulder Dam was officially renamed Hoover Dam in 1947.