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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: American Baptist Historical Society [Contact Us]
Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]
Held at: Fairmount Park Historic Resource Archives [Contact Us]
Held at: Goschenhoppen Historians, Inc. [Contact Us]
Held at: Germantown Historical Society [Contact Us]
Held at: Christ Church Archives [Contact Us]
Held at: Free Library of Philadelphia: Rare Book Department [Contact Us]
Held at: Free Library of Philadelphia: Rare Book Department [Contact Us]