![](http://www.alamy.com/thumbs/6/E6F2D37D-56F7-4C6A-A477-FAF13F40AFB8/2RC6XX0.jpg)
Image depicts a " gun with a split trail open, located on the proving grounds of Bethlehem Steel Company in Bethlehem, PA. The photo was taken on September 24, 1918, by a photographer from the company. This image is marked for official use only with the reference number 962A.
Size: 8387px × 5740px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No
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