Region
Pennsylvania
37
Penn
8
United States
7
Berks County
6
New Jersey
6
Berks County (Pa.)
4
Hopewell Furnace National Historic Site (Pa.)
4
Chester County
3
Chester County (Pa.)
3
Valley Forge
3
Valley Forge (Pa.)
3
Batsto
2
Blair County
2
Blair County (Pa.)
2
Elkton (Md.)
2
Maryland
2
Montgomery County
2
Pennsylvanie
2
Scranton (Pa.)
2
Virginia
2
America
1
Atsion (N.J.)
1
Batsto (N.J.)
1
Birdsborough (Berks County, Pa.)
1
Burlington Co
1
Chesapeake and Delaware Canal (Del. and Md.)
1
Chester Co
1
Cornwall
1
Coventry
1
Coventry (Pa.)
1
Elizabeth
1
Elk Forge
1
Elkton
1
États du Moyen-Atlantique (États-Unis)
1
États-Unis
1
Frederick Co
1
Great Britain
1
Indiana
1
Iron industry and trade
1
Lancaster Co
1
MArtha
1
Martha
1
Middle Atlantic States
1
Montgomery County (Pa.)
1
Moriah
1
Moriah (N.Y.)
1
New York (State)
1
Northampton Co
1
Philadelphia
1
Pine Barrens (N.J.)
1
more ...