United States Geological Survey (USGS) 1:100,000 Topographic Quadrangle Series Indexes is a polygon theme representing the geographic extent of USGS 1:100,000 topographic maps (30- by 60-minute 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.