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Place
- Pennsylvania, United States732
- Philadelphia, Pennsylvania, United States184
- United States of America115
- Allegheny County, Pennsylvania, United States37
- West Branch Delaware River, Pennsylvania, United States32
- Appalachian Mountains, United States23
- Lancaster County, Pennsylvania, United States19
- State College, Pennsylvania, United States17
- Chester County, Pennsylvania, United States16
- North America14
- Allegheny National Forest, Pennsylvania, United States13
- Maryland, United States10
- Chesapeake Bay Basin, Maryland, United States6
- Lycoming County, Pennsylvania, United States6
- Delaware, United States5
- Delaware River, Delaware, United States4
- Susquehanna River, Pennsylvania, United States4
- Murrysville, Pennsylvania, United States3
- New Jersey, United States3
- New York, United States3