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1. U.S. ZIP Code Areas (Five-Digit)

2010. Environmental Systems Research Institute (Redlands, Calif.) and TomTom North America, Inc. This polygon shapefile represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a ... Environmental Systems Research Institute (Redlands, Calif.).

2. USGS 1:24,000 Topographic Quadrangle Series Index, 2010

2010. Environmental Systems Research Institute (Redlands, Calif.) and Geological Survey (U.S.). This polygon shapefile represents the geographic extent of USGS 1:24,000 topographic maps (7.5- by 7.5-minute quadrangles) for the coterminous U.S.... Environmental Systems Research Institute (Redlands, Calif.).