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History of Butler County, Pennsylvania
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History of Northumberland County, Pennsylvania
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Jefferson county, Pennsylvania history
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History of Montgomery County, Pennsylvania
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History of Allegheny county, Pennsylvania
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History of Potter County, Pennsylvania
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The history of Erie County, Pennsylvania
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History of Greene County, Pennsylvania
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History of Cambria County, Pennsylvania
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History of Chester County, Pennsylvania : with genealogical and biographical sketches
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A history of Blair county, Pennsylvania
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A History of Cameron County, Pennsylvania
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A history of Delaware county, Pennsylvania
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History of Centre and Clinton counties, Pennsylvania
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1886 history of Cumberland County, Pennsylvania = originally published as History of Cumberland and Adams Counties
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The history of Bucks County, Pennsylvania, from the discovery of the Delaware to the present time
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History of Bucks County, Pennsylvania : including an account of its original exploration .
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History of Schuylkill County, Pennsylvania ... including a genealogical and biographical record of many families and persons in the county
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History of Carbon County, Pennsylvania; also containing a separate account of the several boroughs and townships in the county
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A history of Adams County, Pennsylvania, 1700-1990
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Jefferson County, Pennsylvania : an illustrated history
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History of Fayette County, Pennsylvania, with biographical sketches of many of its pioneers and prominent men
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History of Lancaster County, Pennsylvania, with biographical sketches of many of its pioneers and prominent men
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A biographical history of York County, Pennsylvania
