Preliminary chart of Wassaw Sound, Wilmington and Tybee River...
Scale 1:40,000. LC Civil War Maps (2nd ed.), 211.5 From its Report of the Superintendent of the Coast Survey, showing the progess of the survey during the year 1864 (Washington, Government Printing Office, 1866). Map 27. "No. 27" is 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 - Boutelle, C. O. (Charles Otis) - Bolles, C. P. - Longfellow, A. W. (Alexander Wadsworth) - Evans, A. W. - Dennis, W. H. - Fendall, C. - Edwards, W. S.