Geological Survey of New Jersey. Atlas Sheet 11 (Camden) (1887) New Jersey Geological Survey Relief shown by 10 ft contour interval and spot heights. Depths shown by 10 ft. contour interval at mean or half tide. "From original surveys based on the triangulation of the U.S. Coast and Geodetic Survey." Lithographed by Julius Bien & Co., NY. In upper margin: Geological Survey of New Jersey. Atlas sheet no. 11 (Camden).