Region
Pennsylvania
Pittsburgh (Pa.)
United States
Pittsburgh
21
Allegheny County (Pa.)
7
Allegheny County
6
Allegheny
2
Canada
2
Chicago
2
Chicago (Ill.)
2
États-Unis
2
Illinois
2
Mahoning County
2
Mahoning County (Ohio)
2
North Side
2
North Side (Pittsburgh, Pa.)
2
Ohio
2
Youngstown
2
Youngstown (Ohio)
2
20th century
1
India, South
1
Monogahela Valley (Pa.)
1
Pennsylvanie
1
Philadelphia
1
Philadelphia (Pa.)
1
Pittsburgh Metropolitan Area
1
Pittsburgh Metropolitan Area (Pa.)
1
Washington Crossing Memorial Bridge (Pittsburgh, Pa.)
1
Youghiogheny Valley (Pa.)
1