Region
United States
29
Pennsylvania
12
États-Unis
7
Pittsburgh
7
Europe
3
Mexico
2
Philadelphia
2
Africa
1
Amérique du Nord
1
Australia
1
Brockville
1
Delaware County
1
Developing countries
1
England
1
Grand Canyon (Ariz.)
1
Ireland
1
London
1
London (England)
1
New Jersey
1
New York (State)
1
Ontario
1
Penn
1
Pittsburgh (Pa.)
1
Rahway
1
Schenectady
1
Swarthmore
1
États-Unis
1