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Autographed letters of famous chemists, 1717-1969 (inclusive) 1791-1964 (bulk)
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Wagner Free Institute of Science [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: University of Pennsylvania: Archives at the Library of the Katz Center for Advanced Judaic Studies [Contact Us]
Held at: Villanova University: Special Collections [Contact Us]
Held at: Drexel University: College of Medicine Legacy Center [Contact Us]
Held at: Awbury Arboretum [Contact Us]
Held at: African Episcopal Church of St. Thomas [Contact Us]
Held at: Byberry Library [Contact Us]
Held at: Charlestown Historical Society [Contact Us]