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Wagner Free Institute of Science Director's files, 1883-1948 (inclusive)
Held at: Wagner Free Institute of Science [Contact Us]
Held at: Wagner Free Institute of Science [Contact Us]
Held at: German Society of Pennsylvania: Joseph P. Horner Memorial Library [Contact Us]
Held at: Free Library of Philadelphia: Rare Book Department [Contact Us]
Held at: University of Pennsylvania: Kislak Center for Special Collections, Rare Books and Manuscripts [Contact Us]
Held at: University of Pennsylvania: Kislak Center for Special Collections, Rare Books and Manuscripts [Contact Us]
Held at: University of Pennsylvania: Kislak Center for Special Collections, Rare Books and Manuscripts [Contact Us]
Held at: Wagner Free Institute of Science [Contact Us]