The exterior of Hughes Research Laboratories where rock bits were test-drilled in Culver City, California in the 1940s. Transcribed from note taped to back of photo: "Rock bits are test-drilled in the laboratory under conditions that duplicate, as far as is possible in the laboratory, those encountered in actual drilling. As a result, rotational speeds, loads, and fluid volume are closely controlled. The rig operator occupies a splash-proof booth above the 'cellar floor.' The instruments on his control panel provide for application and measurement of variable axial loading on the drilling bit up to 100,000 lbs., variable rotational speeds up to 400 rpm, measurement of bit penetration over a total vertical travel of 5 feet at rates up to 180 ft. per hour, and torque. On the panel, also, are several controls for the operation of mud pump and other accessory equipment."

The black and white view of Howard Hughes and his crew before leaving for Paris.

The black and white view of Howard Hughes and his crew before leaving for Paris.

The black and white view of Howard Hughes in his Lockheed 14 aircraft at Floyd Bennett Field in New York. Text printed on accompanying paper strip: "Hughes takes off on flight to Paris. Floyd Bennett Field, New York City-- Howard Hughes, multi-millionaire speed flyer, pictured in the nose of his Hughes Lockheed "Flying Laboratory" as Hughes and his picked crew of four prepared for the take-off to Paris and probably around the world on July 10th. A few minutes after this picture was taken, the giant ship lifted from the field to follow the trail blazed by Chrales A. Lindbergh. Credit Line (ACME) 7/10/38."