Black and white image of two men standing in front of penstock tunnel piping at the site of Hoover Dam construction. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Postcard of the downstream face and powerhouses, Hoover Dam. Caption on back: "Hoover (Boulder) Dam showing Fortification Mountain." "P10567. Color by David Mills."
Black and white image of Hoover Dam with the following description (provided by Special Collections): "View of bank 287.5 KVV transformers along the ramp of the Arizona powerhouse. April 1941." Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of excavation activities at the bed of Hoover Dam. High scalers can be seen displaying their clinging skills on the walls of the Black Canyon. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Look-out point at Boulder Dam, now called Hoover Dam, where hundreds of visitors daily view the spectacular panorama of construction spread out before them. Site Name: Hoover Dam (dam)
Blast in scaling down the canyon walls for construction of the intake towers of the Boulder Dam, now called Hoover Dam. Photo taken from the river-level looking downstream. Site Name: Hoover Dam (dam)
A colored postcard showing an artist's representation of a small boat sailing on the upstream face of Hoover Dam, previously known as Boulder Dam, in Black Canyon. Transcribed onto the top border of the image: "Upstream Face And Intake Towers, Boulder 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.
A view of the upstream face of the newly completed Hoover Dam, intake towers, and rising waters of Lake Mead. Boulder Dam was officially re-named Hoover Dam in 1947.
An image showing a bird's eye view of people peering over the lookout point on the Nevada side of Hoover Dam. Boulder Dam was officially renamed Hoover Dam in 1947.