Black and white image showing dynamite blasts being fired simultaneously for the locations of the Arizona (left) and Nevada (right) intake towers at Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Colorado River-Hoover Dam. View showing construction work on powerhouse. Photo from a book or a magazine; inscription reads: "With the dam proper completed, construction work on the power house is being rushed to completion 24 hours of the day." Site Name: Hoover Dam (dam)
Black and white image of Hoover Dam's crest and intake towers as seen from the Nevada upstream side. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
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."