Geological Survey of New Jersey. Atlas Sheet 7 (Northeastern Red Sandstone) (1884) New Jersey Geological Survey 1896 ed. blueline copy. Relief shown by 20 ft. (hilly portion) and 10 ft. (low country) contour interval and spot heights. Depth shown by 10 ft contour interval at mean tide. "From original surveys and levelings based on the triangulation of the U.S. Coast and Geodetic Survey." In upper margin: Geological Survey of New Jersey. Atlas sheet no. 7 (northeastern Red Sandstone.)
