United States Geological Survey (USGS) 1:250,000 Topographic Quadrangle Series Indexes
- United States Geological Survey (USGS) 1:250,000 Topographic Quadrangle Series Indexes is a polygon theme representing the geographic extent of USGS 1:250,000 topographic maps (1- by 2-degree quadrangles) for the coterminous U.S. forty-eight states and District of Columbia. This dataset is a part of the 2008 ESRI Data & Maps collection.
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