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War Secretary presents Army Flyers with Mackay Trophy. Washington, D.C., Oct. 14. As a reward for their development and demonstration of the original automatic landing device for aircraft, Captains Carl J. Crane and George V. Holloman, U.S. Army Air Corps, were today presented with the MacKay trophy for 1937 by Secretary of War Harry H. Woodring. Gold medals, emblematic of the trophy were presented the Flyers at the same time. Left to right: Charles F. Horner, Chairman of the National Aeronautic Association; Secretary Woodring, Capt. Carl J. Crane, and Capt. George V. Holloman, 10/14/38

War Secretary presents Army Flyers with Mackay Trophy. Washington, D.C...

A black and white photo of a group of men. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Farmer loading spreading device with grasshopper poison. Forsyth, Montana

Farmer loading spreading device with grasshopper poison. Forsyth, Mont...

Picryl description: Public domain image of a farmer worker, 20th-century dust bowl, great depression era, free to use, no copyright restrictions.

New radio meteorograph developed for the U.S. Navy. Washington, D.C., June 9. The National Bureau of Standards has recently developed for the U.S. Navy Meteorological Service a new radio meteorograph. The new instrument (shown in the picture) is sent up on a 5-Foot balloon and is expected to replace the use of airplanes in upper-air meteorological surroundings. E.G. Lapham, Associate Physicist of the bureau, is shown assembling the new meteorograph in preperation for an ascent. The device transmits audio notes which are a function of temperature and humidity. These notes are interrupted at approximately each 10-millibar increment in pressure, thus identifying each temperature and humidity indication with its respective increment of altitude, 6/9/37

New radio meteorograph developed for the U.S. Navy. Washington, D.C., ...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Rubber reclamation. Rubber "mush" from old tires. Softened rubber material, reclaimed from scrap tires by dissolving and washing away the fiber, passes from dewatering screens to storage bins. The rubber, still hot from steam used in previous operations, is kept moving into a squeezing device before proceeding to the drying and other operations of the xylos process. Firestone

Rubber reclamation. Rubber "mush" from old tires. Softened rubber mate...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Conversion. Jukebox plant. A skilled milling machine operator, this employee of an Eastern jukebox manufacturing concern has already been given war work to do. He's aiding in production of electrical control instruments whose basic design is similar to the control device on jukeboxes. When jukeboxes still on the assembly lines have been completed this firm will devote most of its space to war production. Rudolph Wurlitzer, North Tonawanda, New York

Conversion. Jukebox plant. A skilled milling machine operator, this em...

Public domain photograph of a woman, female portrait, free to use, no copyright restrictions image - Picryl description

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