Shows Delaware Bay and Delaware River Estuary from Trenton, N.J., south to the Atlantic Ocean. Relief shown by hachures. Depths shown by soundings, isolines, and shading. "Verified by A.A. Humphreys ..." "Engraved by F. Dankworth, assisted by O.A. Lawson." "Views engraved by O.A. Lawson, Lettering by J. Knight & W. Smith"--Sheet no. 1. "Electrotyped by S. Siebert; Printed by Henry C. Benner." "Final reduction for Engraving of Topography by W.M.C. Fairfax ... & of hydrography by Lt. J.B. Dale, U.S.N. and J.B. Glück Assistant"--Sheet no. 3.