Pennsylvania: Harvey Lake sheet
- Description:
- United States. Geological Survey. U.S.G.S. Relief shown by 20 feet contour interval and spot heights. Surveyed in 1891. Triangulation by S. S. Gannett.
- Publisher:
- [Reston, Va.] : U.S. Geological Survey, 1893.
- Subject(s):
- Topographic maps
- Held by:
- Princeton
- More details at
- https://catalog.princeton.edu/catalog/6867574
