Color image showing an aerial view of Hoover Dam and Lake Mead. The Colorado River is visible below the dam. The aerial, upstream view of Hoover Dam and Lake Mead. The Colorado River is seen below the dam. 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.)
Black and white image of the gravel testing laboratory at the site of the former Stewart Ranch, also known as the Las Vegas Ranch. O. G. Patch stands in the foreground. Site Name: Las Vegas Ranch (Las Vegas, Nev.)
Black and white image showing an interior view of the 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.)