United States Army Air Service Pilot Rating Certificate issued to Leroy Boutwell; Black leather with gold foil Air Service winged propeller insignia on cover; insided black and white photograph of Leroy Boutwell; printed and typed text (see marks); embossed seal. Created by Jason A. Smith Date Created 04/22/2016 Source National Air and Space Museum, Smithsonian Institution. Keywords Aviation; Awards Rights and Restrictions Not determined
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