EarthWorks Geospatial Catalog

Pennsylvania: Ridgway Quadrangle 15-minute series

Description
United States. Geological Survey. U.S.G.S. Alternate title: Ridgway, PA. Polyconic projection. Relief shown by 20 feet contour interval and spot heights. Surveyed in 1940-1941. Verso: The topographic maps of the United States.
Publisher
[Reston, Va.] : U.S. Geological Survey, 1944.
Subject(s)
Topographic maps
Held by
Princeton
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