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Darby Free Library

America's oldest public library, in continuous service since 1743. Darby, Delaware County, Pennsylvania.

Delaware County Library System

FamilySearch - FamilySearch Center Locator: Delaware County

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Philadelphia Archdiocesan Historical Research Center (PAHRC)

The PAHRC contains marriage and baptismal registers before the year 1900 for parishes presently within the Archdiocese of Philadelphia (Bucks, Chester, Delaware, Montgomery and Philadelphia Counties).