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Graceanna Lewis natural history papers, 1869-1890 (bulk) 1869-2006 (inclusive)

Held at: Delaware County Institute of Science [Contact Us]

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The Historical and Interpretive Collections of The Franklin Institute general lantern slide collection, late 19th century-mid-20th century

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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The Historical and Interpretive Collections of The Franklin Institute photograph and negatives collection, circa 1860-1990s

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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The Historical and Interpretive Collections of The Franklin Institute collection of oversized papers, 1790-1984 (inclusive)

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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Oliver Wolcott Gibbs papers, 1847-1910 (inclusive)

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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Henry Butler Allen papers, 1933-1959 (bulk) 1924-1959 (inclusive)

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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Wallace E. Frank notebook, 1945 (inclusive)

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

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Legirungen, circa 1875 (inclusive)

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

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John Muirhead Macfarlane writings, 1922-1929 (inclusive)

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