Shows buoys with red and black ink. Relief shown by hachures. Depths shown by soundings and shading. "Issued in May 1889, F.M. Thorn, superintendent." In upper right margin: Electrotype copy no. 14, U.S.C. & G.S. Includes tables of tides, lighthouses, and bottom types, and 3 coastal views. In upper left margin: No. 337. In upper center margin: Plate no. 1970. Also available online.
Shows buoys with red and black ink. Relief shown by hachures. Depths shown by soundings and shading. "Issued in May 1889, F.M. Thorn, superintendent." In upper right margin: Electrotype copy no. 14, U.S.C. & G.S. Includes tables of tides, lighthouses, and bottom types, and 3 coastal views. In upper left margin: No. 337. In upper center margin: Plate no. 1970. Also available online.