Scale 1:20,000. LC Civil War Maps (2nd ed.), 120.5 From its Report of the Superintendent of the Coast Survey, showing progress of the survey during the year 1862 (Washington, Government Printing Office, 1864). Map 31. "No. 31" in the upper left corner. Description derived from published bibliography. Available also through the Library of Congress web site as raster image.
United States Coast Survey - Bache, A. D. (alexander Dallas) - Simpson, J. H. (james Hervey) - Evans, A. W.