Howard Hughes under the propeller of his Douglas DC-3 aircraft. The photo was taken right before or after his first flight since the nearly fatal XF-11 crash in 1946.
Black and white image of Hoover Dam with the following printed description: "View of 50-foot diameter tunnel below Arizona Tunnel Plug outlet works with Stoney Gate at end of tunnel lowered." Note: Boulder Dam was officially renamed Hoover Dam in 1947.