Statistics for occurrence #1 of “State of South Carolina” in chapter 5, page 56 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

...ederate States for fifty years. When hostilities began, the only foundry for casting cannon was at the Tredegar works in Richmond, and with the exception of a battery of Blakely guns, imported by the State of South Carolina , and a single battery
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