Martin B-10B of the 28th Bombardment Squadron, US-Bomber 1935

USAF photo of Martin B-10B in flight, collected from http://www.maxwell.af.mil/au/afhra/wwwroot/photo_galleries/aaf_wwii_vol_vi/Captions/141_30193.htm "The Maxwell AFB Web site is provided as a public service by the 42nd Communication Squadron. Information presented on the Maxwell Web Site is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credits is requested."

Image from english wikipedia article: Martin B-10

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