Digital Maps and Geospatial Data | Princeton University
Pennsylvania: Troy Quadrangle.
- [Washington, D.C.] : U.S. Geological Survey, 1923.
- United States. Geological Survey. U.S.G.S. Alternate title: Trout Run, PA. Polyconic projection. Relief shown by 20 feet contour interval and spot heights. Surveyed in 1921. Surveyed in cooperation with the State of Pennsylvania. Verso: The topographic maps of the United States.
- Topographic maps
- Call number:
- G3821.C2.s62.U5G4 Trout Run
- Held by:
- Rights Statement:
- No Known Copyright
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