Region
Mississippi River
8
Delaware River
6
United States
6
Potomac River
5
Potomac River Valley
5
Pennsylvania
3
Hudson River
2
Mississippi River Valley
2
New York (State)
2
Ohio River
2
Penn
2
Philadelphia
2
Susquehanna River
2
Virginia
2
West (U.S.)
2
Bucks County (Pa.)
1
Buffalo
1
Chattanooga (Tenn.)
1
Columbia (Pa.)
1
Delaware
1
Delaware river
1
États-Unis
1
États-Unis (Ouest)
1
Indiana
1
James River
1
Lancaster County (Pa.)
1
Mississippi (Fleuve)
1
Mississippi, Vallée du
1
Mullica River
1
Mullica River Valley (N.J.)
1
New Jersey
1
New River
1
Niagara River
1
Ohio River Valley
1
Pennsylvania (Bucks Co.)
1
Pleasant Mills Region (N.J.)
1
Pulaski Co
1
Schuylkill River
1
Schuylkill River (Pa.)
1
Sweetwater Region (N.J.)
1
Tennessee River
1
Valley Forge, Pennsylvania
1
Vicksburg (Miss.)
1
Wabash River
1
Wabash River Valley
1
West Point (N.Y.)
1
West United States
1
Williamsburg (Va.)
1