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PHatU
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Union Library Company, Hatboro, Pennsylvania
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PHersh-
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Hershey Museum, Hershey, Pennsylvania
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Mus
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PHI
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Historical Society of Pennsylvania, Philadel-
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phia
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PIndT
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Indiana State Teachers' College Library, In-
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diana, Pennsylvania
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PJc
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Canbria Free Library, Johnstown, Pennsylvania
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PLFM
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Franklin and Marshall College Library, Lancas-
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ter, Pennsylvania
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PLT
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Theological Seminary of the Reformed Church in
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the U. S., Lancaster
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PMA
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Allegheny College Library, Meadville, Pennsyl-
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vania
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PNortHi
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Historical Society of Montgomery County, Nor-
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ris town, Pennsylvania
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PP
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Free Library of Philadelphia, Philadelphia
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PPA
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Athenaeum of Philadelphia, Philadelphia
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PPACHi
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American Catholic Historical Society Library,
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Philadelphia
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PPAmP
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American Philosophical Society, Philadelphia
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PPB
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Philadelphia Bar Association Library, Phila-
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delphia
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PPCP
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College of Physicians Library, Philadelphia
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PPF
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Friends Library, Philadelphia
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PPFM
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Pennsylvania Masonic Grand Lodge Library,
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Philadelphia
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PPFr
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Friends Free Library, Germantown, Pennsylvania
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PPFYr
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Department of Records, Society of Friends,
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Philadelphia Yearly Meeting, Philadel-
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phia
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PPG
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German Society of Pennsylvania Library. Phila-
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delphia
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PPL
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Library Company of Philadelphia, Philadelphia
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PPL-R
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?? , Ridgway Branch (now consolidated with
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the preceding)
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PPM
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Mercantile Library, Philadelphia
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PPP
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Protestant Episcopal Divinity School Library,
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Philadelphia
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PPPrHi
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Presbyterian Historical Society, Philadelphia
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PPWa
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Wagner Free Institute of Science Library,
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Philadelphia
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PPeSchw
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Schwenckfelder Historical Library, Pennsburg,
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Pennsylvania
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PPiAl
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Allegheny County Law Library, Pittsburgh,
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Pennsylvania
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