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1. United States Counties (Generalized)

1992. Environmental Systems Research Institute (Redlands, Calif.). United States Counties (Generalized) represents the counties of the United States in the 50 states and the District of Columbia. Esri.

2. United States Drainage Systems (Generalized)

1992. Environmental Systems Research Institute (Redlands, Calif.). United States Drainage Systems (Generalized) is a line theme representing the major drainage systems within United States. Esri.

3. United States Geological Survey (USGS) 1:100,000 Topographic Quadrangle Series Indexe, 2012

1992. Environmental Systems Research Institute (Redlands, Calif.). United States Geological Survey (USGS) 1:100,000 Topographic Quadrangle Series Indexes is a polygon theme representing the geographic extent of USG... Esri.

4. United States Geological Survey (USGS) 1:24,000 Topographic Quadrangle Series Index, 2010

1992. Economic and Social Research Institute (Reston, Va.). United States Geological Survey (USGS) 1:24,000 Topographic Quadrangle Series Index is a polygon theme representing the geographic extent of USGS 1... ESRI.

5. United States Geological Survey (USGS) 1:24,000 Topographic Quadrangle Series Index, 2012

1992. Environmental Systems Research Institute (Redlands, Calif.). United States Geological Survey (USGS) 1:24,000 Topographic Quadrangle Series Index is a polygon theme representing the geographic extent of USGS 1... Esri.

6. United States Geological Survey (USGS) 1:250,000 Topographic Quadrangle Series Index, 2012

1992. Environmental Systems Research Institute (Redlands, Calif.). United States Geological Survey (USGS) 1:250,000 Topographic Quadrangle Series Indexes is a polygon theme representing the geographic extent of USG... Esri.

7. United States Lakes (Generalized)

1992. Environmental Systems Research Institute (Redlands, Calif.). United States Lakes (Generalized) is a polygon theme that represents the major lakes within United States. Esri.

8. United States Major Parks, 1992-1997

1992. United States. National Park Service and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents National Parks, National Forests, State and local parks and forests within the United States at 1:100,000 scale. ... Environmental Systems Research Institute (Redlands, Calif.).

9. United States Major Parks, 2012

1992. National Park Service, Environmental Systems Research Institute (Redlands, Calif.), and TomTom North America, Inc. United States Major Parks is a polygon theme representing National Parks, National Forests, State and local parks and forests within the United Sta... Esri.

10. United States Rivers (Generalized)

1992. Environmental Systems Research Institute (Redlands, Calif.). United States Rivers (Generalized) is a polyline theme representing the major rivers within the United States. Esri.