County Archives, Churches and Cemeteries for Berks, Bucks, Chester, Montgomery and Philadelphia Counties
Berks County Conservancy
Berks County Genealogical Society
Bucks County Historical Society
Chester County Historical Society
Conshohocken Historical Society
Delaware County Historical Society
Downingtown Area Historical Society
Evangelical and Reformed Historical Society
Friends Historical Association – Haverford College
Genealogical Society of Pennsylvania
German Society of Pennsylvania
Germantown Historical Society
Goschenhoppen Historians, Inc.
Historical Society of Berks County
Historical Society of Montgomery County
Historical Society of Pennsylvania
Lancaster County Historical Society
Lancaster Mennonite Historical Society
Lower Salford Historical Society
Main Line Roots – Easttown Library
Mennonite Heritage Center
Old York Road Genealogical Society – Abington Library
Phoenixville Historical Society
Pottstown Historical Society
Presbyterian Historical Society
Schwenkfelder Library and Heritage Center
Skippack Historical Society
Tri-County Heritage Society
Valley Forge Historical Society