1867. United States Coast Survey. Relief shown by hachures. Depths shown by soundings and isolines.; "Drawn by A. Lindenkohl ; Chas G. Krebs, Lith"--Lower margin.; "Second edition, ... United States Coast Survey (Washington, D.C).
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1881. United States Coast Survey. Shows buoys with red and black ink.; Relief shown by hachures. Depths shown by soundings and shading.; "Issued in Apr. 1878 C.P. Patterson, superin... United States Coast Survey (Washington, D.C).