An artist's color rendering of Hoover (Boulder) Dam construction midway through progress. Printed text on front of postcard: "Looking upstream, Colorado River, Boulder Dam."
Black and white photographic postcard of Hoover (Boulder) Dam outlets. Printed text on front of ppostcard: "Water discharge from both Arizona and Nevada canyon wall outlets, Boulder Dam."
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.
An artist's color rendering of a man riding a wagon cart pulled by two burros. Written on back of postcard: "The burro is a hardy, homely, pathetic, yet ludicrous little chap, an interesting bit in the colorful drama of the west. The burro and pack train are inseparably linked with the West's early history, especially with the prospector and mining." The postcard is titled "Blazing the Trail to Hoover Dam, Near Las Vegas, Nevada."