Public domain
Conversion. Pianos to airplane motors. From musical instruments to instruments of death. Edward Groe, Nowegian-born employee of a Chicago piano factory, has been regulating the pneumatic motors of trainer planes since the firm's conversion to war production. Employed by this same company since 1909,
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineConversion. Pianos to airplane motors. From musical instruments to instruments of death. Edward Groe, Nowegian-born employee of a Chicago piano factory, has been regulating the pneumatic motors of tra. 1942-01-01. Rosener, Ann, United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.