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Delaware County Institute of Science manuscript collection, 1686-2014 (inclusive)
Held at: Delaware County Institute of Science [Contact Us]
Held at: Delaware County Institute of Science [Contact Us]
Held at: Darby Free Library [Contact Us]
Held at: Doylestown Historical Society [Contact Us]
Held at: Doylestown Historical Society [Contact Us]
Held at: Doylestown Historical Society [Contact Us]
Held at: Doylestown Historical Society [Contact Us]
Held at: Doylestown Historical Society [Contact Us]
Held at: East Falls Historical Society [Contact Us]
Held at: East Falls Historical Society [Contact Us]
Held at: Elwyn Historical Archives and Museum [Contact Us]