A couple standing alongside a cliff viewing the Hoover Dam. A label at the bottom of the photo: "Hoover Dam is one of the most popular visitor attractions of all the man-made wonders in the U.S."
A comparison of an image of Hoover Dam's upstream face in February 1935 to an image taken later that year, after the waters of Lake Mead had risen. The captions read "February 1935- Boulder Dam today." Boulder Dam was officially re-named Hoover Dam in 1947.