EarthWorks Geospatial Catalog

Pennsylvania: Allentown sheet

Description
United States. Geological Survey. U.S.G.S. Alternate title: Allentown, PA. Polyconic projection. Relief shown by 20 feet contour interval and spot heights. Surveyed in 1893. Triangulation by U.S. Coast and Geodetic Survey and S. S. Gannett. Verso: The topographic maps of the United States.
Publisher
[Washington, D.C.] : U.S. Geological Survey, 1894.
Subject(s)
Topographic maps and Allentown (Pa.)—Maps
Held by
Princeton
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