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1. U.S. States, 2007-2013

2010. TomTom North America, Inc. and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the 50 states, the District of Columbia, and Puerto Rico of the United States at 1:100,000 scale.This layer also ... Environmental Systems Research Institute (Redlands, Calif.).

2. U.S. States (Generalized) 2010-2013

2010. Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile contains the boundaries of the 50 states and the District of Columbia of the United States. Included are statistics on popul... Environmental Systems Research Institute (Redlands, Calif.).