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1. 1:100,000 Digital Raster Graphics for Maryland

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

2. 1:24,000 - 7.5 minute Digital Raster Graphics for Maryland

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

3. 1:250,000 Digital Raster Graphics for Maryland

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

4. National Agriculture Imagery Program (NAIP) for Maryland - County Mosaics

2009. USDA-FSA Aerial Photography Field Office. This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP acquires digital ortho imagery during the agricultura...

5. Topographic Maps (DRG) for Pennsylvania 1:100,000 - UTM

1996. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS \r\ntopographic or planimetric map including the collar information, georeferenc...

6. Topographic Maps (DRG) for Pennsylvania 1:250,000 - UTM

1996. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS \r\ntopographic or planimetric map including the collar information, georeferenc...