Public domain
Production. B-17F heavy bomber. E. Waters finishes plaster casts of ducts for B-17F (Flying Fortress) bombers at the Boeing plant at Seattle. The patterns will be reproduced on a Kellar machine. The Flying Fortress, a four-engine heavy bomber capable of flying at high altitudes, has performed with g
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Credit lineProduction. B-17F heavy bomber. E. Waters finishes plaster casts of ducts for B-17F (Flying Fortress) bombers at the Boeing plant at Seattle. The patterns will be reproduced on a Kellar machine. The F. 1942-01-01. United States. Office Of War Information, Feininger, Andreas. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.