Public domain
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
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Credit lineWar 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 Ca. 1938-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.