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1931 deaths
Members of the American Philosophical Society
Harvard University alumni
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Businesspeople from Philadelphia
1863 births
American geologists
American people of Cornish descent
Presidents of the Geological Society of America
United States Geological Survey personnel
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Penrose family

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R. A. F. Penrose Jr.

Geological Society of America

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Spencer Fullerton Baird

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R.A.F. Penrose

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R.A.F. Penrose Jr

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