Keywords: 80-G-426818: USS Buttercup, a 40 ton section of a naval ship afloat in a tank at Treasure Island Naval Base, under simulated battle conditions. Photograph released March 3, 1951. U.S. Navy Photograph, now in the collections of the National Archives. (2016/03/22). 80-G-426818: USS Buttercup, a 40 ton section of a naval ship afloat in a tank at Treasure Island Naval Base, under simulated battle conditions. Photograph released March 3, 1951. U.S. Navy Photograph, now in the collections of the National Archives. (2016/03/22). |