Region
Pennsylvania
Pittsburgh (Pa.)
Pittsburgh
36
United States
20
Allegheny County
4
Allegheny County (Pa.)
4
Pennsylvanie
3
Monongahela River Valley (W. Va. and Pa.)
2
Ohio
2
19th century
1
Allegheny City (Pa.)
1
Arkansas
1
Baltimore (Md.)
1
Boston
1
Boston (Mass.)
1
Boston, Mass
1
Cheltenham
1
England
1
États-Unis
1
Indiana
1
Maryland
1
Massachusetts
1
North Side (Pittsburgh, Pa.)
1
Philadelphia (Pa.)
1
Pittsburgh, Pa
1
Schenley Plaza (Pittsburgh, Pa.)
1
Tennessee
1
West (U.S.)
1