A topographical map of the Central Highlands including all of Morris County west of Boonton and Sussex County south and east of Newton. George H. Cook, State Geologist, John C. Smock, assistant geologist, C.C.Vermeule, topographer. 1884. Geological Survey of New Jersey. Atlas sheet no. 3, Central Highlands. Julius Bien & Co., Lith., N.Y. (1888)