Region
Pennsylvania
5
United States
4
Blair County (Pa.)
3
Philadelphia
2
Soviet Union
2
Allentown (Pa.)
1
Boyertown (Pa.)
1
Chester (Pa.)
1
Conewago Creek Valley (Adams County and York County, Pa.)
1
Maryland
1
Morrison Cove (Pa.)
1
Northwest, Old
1
Pittsburgh (Pa.)
1
Virginia
1
West (U.S.)
1
York
1
York (Pa.)
1
York County (Pa.)
1