Geological Survey of New Jersey. Atlas Sheet 31 (1903) New Jersey Geological Survey Relief shown by 10 ft. contour interval and spot heights. Depth of water shown by 10 ft. contour intervals and soundings in feet at low tide. Title is not given. Region covered: vicinity of Camden to Mount Holly, Hammonton and Elmer. Original survey and revisions to 1886, principal features revised 1903. From original surveys and levelings based on triangulation of the U.S. Coast and Geodetic Survey.