EarthWorks Geospatial Catalog

USGS 1:250,000 Topographic Quadrangle Series Index U.S.A. 1958-2002

Description
The following polygon shapefile represents 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.
Publisher
Environmental Systems Research Institute (Redlands, Calif.)
Year
1992
Held by
Tufts
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