1:100,000 Digital Raster Graphics for Virginia {2000}
Description
A Digital Raster Graphic (DRG) is a raster image of a scanned USGS
topographic or planimetric map including the collar information, georeferenced to
the UTM grid.
Geological Survey (U.S.) (2000). 1:100,000 Digital Raster Graphics for Virginia {2000}. . https://www.pasda.psu.edu/uci/DataSummary.aspx?dataset=617 (dataset)