Belle Butler (wife of Jim Butler, lower left), and Daisy Rendall (later married to Nevada Governor Tasker Oddie), pose outside of adits at a mine near Tonopah, Nevada where Jim Butler first discovered gold.
Black and white image of equipment being lowered into Hoover Dam. People are watching from the lookout point on the Nevada side of the dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Atomic fireball and mushroom cloud, photographed by Sgt. Robert Cogswell of the U.S. Army. Inscription with photo reads: "from News fifteen and one-half miles from ground zero March 7, 1955, by an Army Signal Corps cameraman."