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| | Townships, Boroughs, County Evolution for PA Counties |
 | | TOWNSHIPS (as of 1990): Annin, Bradford, Ceres, Corydon, Eldred, Foster, Hamilton, Hamlin, Keating, Lafayette, Liberty, Norwich, Otto, Sergeant, Wetmore. |
 | | TOWNSHIPS (as of 1990): Abbott, Allegany, Bingham, Clara, |
 | | TOWNSHIPS (as of 1990; dates are formation dates): Adams (1874), Beaver (1787), Center (1804/5), Chapman (1820), Franklin (1853), Jackson (1854), Middlecreek (1838), Monroe (1856), Penn/Penns/Penn's (1758), Perry (1816), Spring (1885), Union (1869), Washington (1818), West Beaver (1843), West Perry (1858). |
| dgmweb.net /genealogy/Ancillary/Geog/PA/PA-Cos.shtml (4698 words) |
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