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."

Telegram from A .S. Halsted to Fred E. Pettit, Jr., July 13, 1922

The black and white view of the Lockheed 14 aircraft in New York, New York. Typed on a piece of paper attached to the image: "Readying Hughes' plane for Paris flight. Hughes's Lockheed 14 monoplane in shape for a flight from Floyd Bennett Airport here, to Paris. Motor trouble forced postponement and helpers were working under injunction to have the ship ready for a takeoff July 9 "at the earliest possible moment." Photo shows: General view of crowd watching plane being serviced outside hangar. Credit Line (ACME) 7/9/1938."