Transcribed from attached press release: HUGHES TOOL COMPANY Cornerstone of the industrial empire of Howard Hughes is the Hughes Tool Company of Houston, Texas, which last year produced more than half a million rock bits for drilling the kind of deep wells now producing 90 per cent of the world's petroleum. In the company's mechanical testing section (above) engineers test the products under conditions simulating actual drilling. Howard Hughes' father's invention of the rock bit is believed to be one of the most important industrial developments of the century; without such a tool we might still be living in a horse and buggy era."

Transcribed from attached press release: "HUGHES ROCK BIT PRODUCTION more than 500,000 rock bits produced last year by the Hughes Tool Company, Houston, Texas, for drilling the kind of deep wells which now produce 90 per cent of the world's petroleum. The rock bit was invented by Howard Hughes' father and the resulting business became the cornerstone on which Howard Hughes built his industrial empire. The machinist above is performing an operation on the cones which make up the rotating end of the Hughes rock bit." Transcribed from photo sleeve: "The Kearney and Trecker 4 spindle machine at the Hughes Tool Company in Houston, Texas. Ca. 1950s."

Transcribed from attached press release: "DRILLING LABORATORY The fundamental purpose of all Hughes rock bit research is to improve bit performance. In attaining this improvement it is necessary to balance design with the application of correct metallurgical materials and manufacturing methods. The preliminary proving ground is the Drilling laboratory housed in the main Laboratory building. Its field-size drilling rig, with 118 ft. derrick, was especially designed to test rock bits in a manner simulating oilfield drilling conditions."

The second XF-11 prototype, a reconnaissance plane the Howard Hughes built and designed in conjunction with Air Material Command engineers.

The second XF-11 prototype, a reconnaissance plane the Howard Hughes built and designed in conjunction with Air Material Command engineers.

The second XF-11 prototype, a reconnaissance plane the Howard Hughes built and designed in conjunction with Air Material Command engineers.

The Hughes' "Spruce Goose" or Flying Boat being assembled at Long Beach Harbor.