Digital Geologic-GIS Map of Hopewell Furnace National Historic Site and Valley Forge National Historical Park, and Vicinity, Pennsylvania (NPS, GRD, GRI, HOFU, VAFO, HFVF digital map) adapted from a Pennsylvania Geological Survey Map by Berg, Edmunds, Geyer and others, compilers (1980)
The Digital Geologic-GIS Map of Hopewell Furnace National Historic Site and Valley Forge National Historical Park, and Vicinity, Pennsylvania is composed of GIS data layers and GIS tables, and is available in the following GRI-supported GIS data formats: 1.) an ESRI file geodatabase (hfvf_geology.gdb), a 2.) Open …