An image of Parker Dam on the Colorado River at the California-Arizona border, 155 miles downstream from Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Description given with photo: "Howard Hughes sits with his witnesses at Senate War Invest. Hearing. 1st row (l to r): Glen Odekirk & Thomas Slack; 2nd row (l to r): E. A. Peterman, Richard (?), & Howard Hughes; 3rd row (l to r): Edward Schwartz, John Parkinson, & John R. (?)."