Region
America
2
Delaware
2
Delaware River Valley
2
Delaware River Valley (N.Y.-Del. and N.J.)
2
Delaware, Vallée de la (N.Y.-Del. et N.J.)
1
États du Moyen-Atlantique (États-Unis)
1
États-Unis
2
Maryland
Middle Atlantic States
1
New Jersey
2
New Sweden
2
Ohio River Valley
1
Ohio, Vallée de l'
1
Pennsylvania
3
Pennsylvanie
2
Sweden
2
United States
3
United States, Maryland
1
United States, Virginia
1
Virginia
1
Virginie
1
Western Hemisphere
2