Fold-out. Lewis Machine Gun 30-U.S. Government Airplane Model 1918, in Papers on Aeronautics. L’Aerophile Collection, Science, Business and Technology Division, Library of Congress (126.
Fold-out. Lewis Machine Gun 30-U.S. Government Airplane Model 1918, in Papers on Aeronautics. L’Aerophile Collection, Science, Business and Technology Division, Library of Congress (126.