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Constantine Hering and Calvin B. Knerr family papers, 1820-1940 (bulk) 1820-2003 (inclusive)
Held at: Drexel University: College of Medicine Legacy Center [Contact Us]
Held at: Drexel University: College of Medicine Legacy Center [Contact Us]
Held at: West Nantmeal Township Historical Commission [Contact Us]
Held at: Westtown School Archives [Contact Us]
Held at: Westtown School Archives [Contact Us]
Held at: Yardley Historical Association [Contact Us]
Held at: Historical Society of Montgomery County [Contact Us]
Held at: Historical Society of the Phoenixville Area [Contact Us]
Held at: Lower Merion Historical Society [Contact Us]
Held at: Margaret R. Grundy Memorial Library [Contact Us]
Held at: Old York Road Historical Society [Contact Us]