Region
United States
Pennsylvania
22
Philadelphia
14
Philadelphia (Pa.)
7
États-Unis
6
Pennsylvanie
4
Philadelphie
3
Pittsburgh
3
Pittsburgh (Pa.)
3
20th century
1
Allemagne
1
Bethlehem Steel Company
1
Canada
1
Düsseldorf
1
Düsseldorf (Germany)
1
Germany
1
Iraq
1
New Hope Region
1
New Jersey
1
Ontario
1
Pittsburgh Metropolitan Area
1
Pittsburgh Metropolitan Area (Pa.)
1
Scranton (Pa.)
1
Society Hill
1
Society Hill (Philadelphia, Pa.)
1
Toronto
1
Wilkes-Barre (Pa.)
1