EarthWorks Geospatial Catalog

Pennsylvania: Norristown sheet

Description
United States. Geological Survey. U.S.G.S. Relief shown by 20 feet contour interval and spot heights. Surveyed in 1894. Triangulation by S. S. Gannett. Verso: Description of the topographic map of the United States.
Publisher
[Reston, Va.] : U.S. Geological Survey, 1895.
Subject(s)
Topographic maps and Norristown (Pa.)—Maps
Held by
Princeton
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