Region
Pennsylvania
7
United States
6
Canada
4
Canadian Northwest
2
Nord-Ouest canadien
2
Northwest, Canadian
2
Prairie Provinces
2
Brazil
1
Colorado
1
Delaware
1
Delaware River Basin
1
Delaware River Watershed (N.Y.-Del. and N.J.
1
Elk County (Pa.)
1
Ireland
1
Irlande
1
New Jersey
1
New York (State)
1
North Dakota
1
Onondaga County
1
Ontario
1
Penn
1
Philadelphia (Pa.)
1
Provinces des Prairies
1