Region
Delaware River Valley (N.Y.-Del. and N.J.)
10
Pennsylvania
10
United States
6
Delaware
5
New Jersey
5
Philadelphia (Pa.)
5
Delaware County (Pa.)
4
Delaware River (N.Y.-Del. and N.J.)
4
Delaware River Valley
4
Penn
4
Bucks County (Pa.)
2
Chester County (Pa.)
2
Delaware, Vallée de la (N.Y.-Del. et N.J.)
2
Montgomery County (Pa.)
2
Philadelphia Region (Pa.)
2
Brandywine Creek (Pa. and Del.)
1
Delaware (N.Y.-Del. et N.J. : Fleuve)
1
Delaware County
1
Delaware River
1
Guidebooks
1
Lambertville
1
Lambertville (N.J.)
1
Marland
1
Pennsylvanie
1
Philadelphia
1
Philadelphia Metropolitan Area
1
Philadelphie
1
Washington (D.C.)
1
Washington Crossing Historic Park (Pa.)
1