Geological Survey of New Jersey. Atlas Sheet 31 (1913) New Jersey Geological Survey. Relief shown by 10 ft. contour interval and spot heights. Depth of water shown by soundings in feet at low tide. Title is not given. Region covered: vicinity of Camden to Mount Holly, Hammonton and Elmer. Original survey, 188;, principal features revised, 1903. From original surveys and levellings based on the triangulation of the U.S. Coast and Geodetic Survey.