DRG map - Washington, D.C.

http://egsc.usgs.gov/isb//pubs/factsheets/fs08801.html

 

This DRG is interesting because it looks a bit old-fashioned.  In fact, DRGs or Digital Raster Graphics, are scanned images of U.S. Geological Survey topographic maps.  Once these maps are scanned, the map neatline is georeferenced to the surface of the Earth.  On this DRG map, we can see part of Washington D.C., West (probably from the 1990s) including the Potomac River and some contour lines, which is typical for a topographic map.  Since this is an urban area, parts of town are also labeled, as are some green spaces and a bridge.