An image of unidentified guests sitting and listening to speeches at Boulder Dam's decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of unidentified guests sitting and listening to speeches at Boulder Dam's decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of unidentified guests sitting and listening to speeches at Boulder Dam's decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of unidentified men standing in the lookout well during the Boulder Dam decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Illustration of the construction of Boulder Dam, later called Hoover Dam. Caption reads: "Boulder Dam and lower portals of diversion tunnels. Colorado River."