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1:100k Digital Raster Graphic - Collars Removed
A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar information. The image inside the... -
Minnesota Scanned Topographic Map Service
The Minnesota Geospatial Image Service provides versatile access to the USGS Topographic Map Series layers (DRG format) using a Web Map Service (WMS). Using this service...
També podeu accedir a aquest registre usant l'API API (vegeu Documentació de la API).