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Dr. J. Elmer Porter family papers, 1870-1960 (bulk) 1829-1977 (inclusive)
Held at: Pottstown Historical Society [Contact Us]
Held at: Pottstown Historical Society [Contact Us]
Held at: Pottstown Historical Society [Contact Us]
Held at: Radnor Historical Society [Contact Us]
Held at: Radnor Historical Society [Contact Us]
Held at: Roxborough Manayunk Wissahickon Historical Society [Contact Us]
Held at: The Historical Society of Trappe, Collegeville, Perkiomen Valley [Contact Us]
Held at: Tri-County Heritage Society [Contact Us]
Held at: Yardley Historical Association [Contact Us]