Region
Atlantic Coast
2
Australia
2
Bedford County
1
Bedford County (Pa.)
1
Berks County
2
Berks County (Pa.)
1
Bethlehem Steel Company
1
Bucks County
5
Chesapeake Bay (Md. and Va.)
1
Chester Co
1
Chester County
2
Chester County (Pa.)
3
Chestnut Hill (Philadelphia, Pa.)
1
Christiansburg
1
Columbia
1
Columbia County
1
Columbia County (Pa.)
1
Delaware Avenue (Philadelphia, Pa.)
1
Delaware County
1
Delaware River Estuary
3
Delaware Water Gap
1
Easton
1
États-Unis
2
Filadelfia
1
Florence
1
Florenz
1
Förenta staterna
1
France
1
Germantown
1
Harrisburg
1
Hawk Mountain Sanctuary
1
Hawk Mountain Sanctuary (Pa.)
1
Hunterdon County
1
Independence National Historical Park (Philadelphia, Pa.)
1
Italie
1
Italy
2
Jefferson County
1
Jefferson County (Pa.)
1
Lancaster
3
Lancaster County
2
Lansdowne
1
Manayunk (Philadelphia, Pa.)
3
Merion
1
Mexico
1
Minneapolis
1
Minnesota
1
Montgomery Co
2
Municipal Pier (Philadelphia, Pa.)
1
Municipal Pier (Ventnor, N.J.)
1
Netherlands
2
more ...