The black and white view of Howard Hughes' Lockheed 14 aircraft after performing its final landing on the Round the World flight at Floyd Bennett Airport, New York. Description printed on back of photograph: "General view of welcoming ceremony. 7/14/1938"
An image of Parker Dam on the Colorado River at the California-Arizona border, 155 miles downstream from Hoover Dam. Parker Dam is commonly referred to as "the deepest dam in the world" because 73% of the dam's structural height is positioned below the original river bed. Note: Boulder Dam was officially renamed Hoover Dam in 1947.