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Comparison of effective ranges
Drawing highlights the effective ranges of different ammunition. Also included are drawings of the B-17, the Dewoitine, a weapon mounting, a Burnelli bomber, a 37 mm gun, and a plane with four guns mounted.
37.5 x 20.5 cm
black and white
- still image
- These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.
- The Janet A. Ginsburg Chicago Tribune Image Collection
- Chicago Sunday Tribune (August 8, 1937), p. 8