Black and white image with the following printed description: The late afternoon sun highlights the transmission lines from Hoover Dam as they sweep across the desert.
Black and white image of the Boulder Canyon Dam "C" site. Written on the image are the dimensions of the canyon. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the completed gravel testing laboratory at the site of the former Stewart Ranch, also known as the Las Vegas Ranch. Site Name: Las Vegas Ranch (Las Vegas, Nev.)