New Jersey. Department of Conservation and Development. Division of Geology and Waters. Atlas Sheet 24 (1921) New Jersey Geological Survey. Relief shown by 20 ft contour interval. Title is not given. Region covered: southern Warren, northern Hunterdon and western Morris counties. Original survey 1882 and 1883, principal features revised 1903, 1920. Original survey and revision of C. C. Vermeule. Reviision of 1920 H. B. Kummel.