triangulation by C.P. Bolles, A.S. Wadsworth, and D.B. Wainwright ; topography by C.P. Bolles, J. Mechan and C.T. Jardella ; hydrography by W.I. Vinal. Depths shown by soundings, isolines, and shading. "The soundings are expressed in feet an show the depth at mean low water. Depths of 18 feet and less are shown on a dotted surface." "No. 425 ... plate no. 2037"--Top margin. Includes notes and tables. "The reduced drawing of hydrography by A. Lindenkohl ; the engraving was executed as follows: outlines, topography and sand by R.F. Bartle, hydrography by R.F. Bartle, Jr., general lettering by A. Petersen, title and notes by H.M. Knight."
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