Region
United States
3
Europe
2
Europe, Eastern
2
Africa
1
Asia
1
Canada
1
Central America
1
Delaware
1
Denmark
1
Europe, Northern
1
Finland
1
Germany
1
Great Britain
1
Iceland
1
Mexico
1
Norway
1
Oceania
1
Penn
1
Pennsylvania
1
Philadelphia
1
Pittsburgh
1
Pittsburgh (Pa.)
1
Slavic countries
1
South America
1
Sweden
1
Wales
1
Winterthur
1