Region
America
2
Connecticut
1
Connecticut River Valley
1
Delaware
7
Delaware (N.Y.-Del. et N.J. : Fleuve)
1
Delaware River
2
Delaware River (N.Y.-Del. and N.J.)
2
Delaware River Valley
4
Delaware River Valley (N.Y.-Del. and N.J.)
5
Delaware, Vallée de la (N.Y.-Del. et N.J.)
1
États-Unis
2
Maryland
3
New Jersey
2
New Sweden
4
Pennsylvania
3
Pennsylvanie
2
Potomac River
1
Sweden
2
United States
8
United States, Maryland
1
United States, Virginia
1
Virginia
1
Western Hemisphere
2