New Jersey. Department of Conservation. Division of Forestry, Geology, Parks, and Historic Sites. Atlas Sheet 23 (1947) New Jersey Geological Survey. Alternate title: [New Jersey.] Atlas sheet no. 23. Relief shown by 10 to 20 ft contour interval. Title is not given. Region covered: northern Bergen and eastern Passaic counties. Original survey made under direction of C. C. Vermeule, Topographer, in 1880-3. 1947 revision by R. G. Blanchard, Topographic Engineer.