Digital Maps and Geospatial Data | Princeton University
Pennsylvania: Elders Ridge Quadrangle
- [Washington, D.C.] : U.S. Geological Survey, 1904.
United States. Geological Survey. U.S.G.S. Relief shown by 20 feet contour interval and spot heights. Surveyed in 1902 in cooperation with the State of Pennsylvania. Triangulation by A. H. Thompson. Verso: Description of the topographic map of the United States.
- Topographic maps
- Call number:
- G3821.C2.s62.U5G4 Elders Ridge
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