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A history of Blair county, Pennsylvania
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Military services and genealogical records of soldiers of Blair County, Pennsylvania
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150,000 trees : growing a memorial for 9/11's Flight 93
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Johnstown flood
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The Johnstown flood
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The Johnstown Flood : core events of a deadly disaster
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Johnstown flood : the day the dam burst
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The Johnstown flood of 1889 : the tragedy of the Conemaugh
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Banished from Johnstown : racist backlash in Pennsylvania
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Ruthless tide : the heroes and villains of the Johnstown flood, America's astonishing gilded age disaster
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Head for the hills! : the amazing true story of the Johnstown flood
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Erie, chronicle of a Great Lakes city
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Pittsburgh : a new portrait
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Pittsburgh, then and now
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Chambersburg, frontier town, 1730-1794 : a bicentennial narrative of the origin and growth of Chambersburg and Franklin County in Pennsylvania
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Now and then
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Pittsburgh; the story of an American city
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A history of Pottstown, Pennsylvania
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Conestoga crossroads, Lancaster, Pennsylvania, 1730-1790
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Bethlehem of Pennsylvania; the first one hundred years, 1741 to 1841
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The Aaronsburg story
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A history of College Township before and after 1875
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Homestead : the glory and tragedy of an American steel town
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Historical collections relating to Gwynedd, a township of Montgomery County, Pennsylvania, settled, 1698, by immigrants from Wales, with some data referring to the adjoining township, of Montgomery, also settled by Welsh
