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Caption: "Coast Defense: 14 Inch Disappearing Gun." Another copy of a C.D. Heath photograph, this image shows a heavy artillery gun, with two unidentified men standing next to it, at the Sandy Hook Proving Ground. Located at Sandy Hook, New Jersey, the Sandy Hook Proving Ground was used by the U.S. Army to test ordinance and materiel from 1874-1919. See also 96-07-08-alb05-101.
Date: 1910