William Culp Darrah (1909 – 1989) was an American professor of biology at Gettysburg College in Pennsylvania.
Born in Reading, Pennsylvania, his was a specialist in paleobotany.
Darrah was a fellow of the American Association for the Advancement of Science, as well a member of Sigma Xi and the Botanical Society of America.
As part of his interest in early photography, he assembled a collection of over 60,000 cartes-de-visite, which is now held at Penn State University.
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