Region
United States
États-Unis
50
USA
17
Pennsylvania
11
Philadelphia
11
New York (N.Y.)
6
Canada
5
France
5
Germany
5
New York
5
North America
5
New York (State)
4
Philadelphia (Pa.)
4
Southern States
4
Southwest, New
4
Allemagne
3
California
3
États-Unis (Sud)
3
Québec (Province)
3
Atlantic Coast
2
Delaware River Estuary
2
Düsseldorf
2
Düsseldorf (Allemagne)
2
Estados Unidos
2
Etats-Unis
2
États-Unis (Ouest)
2
Förenta staterna
2
Great Britain
2
Italy
2
Kentucky
2
Latin America
2
Mexico
2
Nordamerika
2
Penn
2
Poland
2
Québec
2
Washington (D.C.)
2
West (U.S.)
2
West United States
2
1980-
1
20th century
1
America
1
Amerika
1
Australia
1
Baltimore
1
Baltimore (Md.)
1
Bethlehem Steel Company
1
Boston
1
Brandywine Creek Valley
1
Brandywine Creek Valley (Pa. and Del.)
1
more ...