Northumberland County: The Mother County

Although named for the most northern of England’s shires, Northumberland County has been often called by many the “Mother County.” Organized on March 21, 1772, as Pennsylvania’s tenth county, at one time it encom­passed eighteen thousand square miles! The county once extended from the Lehigh to the Allegheny rivers, with the New York border as its north­ern boundary. Its...
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