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              Google Books
          Scan date
              Notes
              Sized, cropped, and adjusted for use by John Osborne, Dickinson College, November 26, 2008.
          Image type
              photograph
          Source citation
              Jennings Cropper Wise, The Long Arm of Lee; or, The History of the Artillery of the Army of Northern Virginia; with a Brief Account of the Confederate Bureau of Ordinance, Volume II (Lynchburg, VA: J.P. Bell and   Company, Inc., 1915), 576.