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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]

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John W. Mauchly papers, 1908-1980 (inclusive)

Held at: University of Pennsylvania: Kislak Center for Special Collections, Rare Books and Manuscripts [Contact Us]