For plant illustrations, 3-dimensional illustrations, and county maps of West Virginia--Strausbaugh, P. D. and E. L. Core. 1970, 1971, 1973, 1977. Flora of West Virginia, Seneca Books, Inc., Morgantown, WV.
Other geologic maps by John Renton, Department of Geology, West Virginia University and revised by David Sturm for network access.