Region
United States
11
États-Unis
9
Canada
4
Angleterre
3
England
3
Norvège
3
Norway
3
Pennsylvania
3
America
2
Delaware
2
Delaware River Valley
2
Delaware River Valley (N.Y.-Del. and N.J.)
2
Maryland
2
New Jersey
2
New Sweden
2
Ouvrages avant 1800
2
Pennsylvanie
2
Sweden
2
Western Hemisphere
2
Delaware, Vallée de la (N.Y.-Del. et N.J.)
1
Nordamerika
1
Uppsala (Sweden)
1