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| | Townships, Boroughs, County Evolution for PA Counties |
 | | Formation: Derry (1767, original county), Armagh (1770 from Derry), Wayne (1782 from Derry), Union (1790 from Armagh), Decatur (1813 from Derry), Oliver (1835 from Wayne), Brown (1837 from Armagh), Menno (1837 from Union), Granville (1838 from Oliver?), Bratton (1859 from Oliver). |
 | | TOWNSHIPS (as of 1990): Abbott, Allegany, Bingham, Clara, |
 | | TOWNSHIPS (as of 1990): Annin, Bradford, Ceres, Corydon, Eldred, Foster, Hamilton, Hamlin, Keating, Lafayette, Liberty, Norwich, Otto, Sergeant, Wetmore. |
| dgmweb.net /genealogy/Ancillary/Geog/PA/PA-Cos.shtml (4638 words) |
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