National Park Service Visiters Service Dataset - Line
Williams T. 2002. National Park Service Visiters Service Dataset - Line. National Park Service, GIS Program Office
This dataset contains visitor services located in the National Park System. The dataset was compiled (and edited) from a variety of sources including park-based GIS databases, U.S. Geological Survery 7.5' 1:24000 quadrangles and DOQQs. The locations are in Latitude-Longitude (NAD83) decimal degrees.