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Northumberland_County_Resource_Guide_2018
Northumberland County was created from parts of Lancaster, Northampton, Cumberland,
Bedford and Berks Counties, 27 March 1772. The county seat is Sunbury
Northumberland County Repositories
Consult the web sites listed for specific information about holdings, current hours, current
admission fees, and access rules. Many archives and repositories have very limited hours.
Pennsylvania became a state December 12, 1787, has 67 Counties and 2,561
Municipalities