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.
One of the wings of the Hughes Flying Boat is seen being transported by truck on a narrow road in the country, on its way towards the Los Angeles Harbor in June 1946.
Transcribed from attachment to photo: "TOUGH TEST - A hard formation drilling test is begun in the big laboratory at Hughes Tool Company, Houston, Texas, where any drilling condition found anywhere in the world can be duplicated. Here, where the vast majority of rock bits used in the U. S. and Canada are produced, is the cornerstone of Howard Hughes' industrial empire; it was principally the income from the oil drilling equipment company which enables Hughes to branch out into many other fields."