Black and white image showing a downstream view of the Hoover Dam construction site from the lower slope of the upper cofferdam. The excavation for the base of the Nevada intake towers can be seen in the upper right. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image from one of the Hoover Dam spillways of the dam face, intake towers and electric transmission towers in Black Canyon. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
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 the Hoover Dam tunnel construction site. There are four visible bridges over the Colorado River. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the Hoover Dam tunnel construction site. There are four visible bridges over the Colorado River. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
High scaling during early constuction at Boulder Dam [left], Transporting men by cableway, Boulder Dam [middle], Boulder Dam dowstream face and power house [right], 1931-1936