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Biddle family papers, 1709-2017 (inclusive) 1776-1952 (bulk)
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: Princeton University Library: Manuscripts Division [Contact Us]
Held at: Wagner Free Institute of Science [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]