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.
The filling of the Hoover Dam after the completion of construction. This photograph was taken when it was called the Boulder Dam. It was officially renamed the Hoover Dam in 1947. Written on the top of the photo: "BDRA. NEV. 4.36 343." Site Name: Hoover Dam (dam)
Illustration of Boulder Dam, later called Hoover Dam, construction. Caption reads: "A close-up, showing construction detail, Boulder Dam, Colorado River."