New Jersey. Department of Conservation. Division of Forestry, Geology, Parks, and Historic Sites. Atlas Sheet 21 (1946) New Jersey Geological Survey. Alternate title: [New Jersey.] Atlas sheet no. 21. Relief show by 20 ft. contour intervals and spot heights. Title was not given. Region covered: Kittatinny Valley and Mountain. Original survey 1made under direction of C.C. Vermeule, Topographer in 1880-3. 1946 revision by R. G. Blanchard, Topographic Engineer.