William_Culp_Darrah

William Culp Darrah (1909 – 1989) was an American professor of biology at Gettysburg College in Pennsylvania. He also had an interest in, and published several works on, 19th-century photography.
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 an authority on the history of photography, he authored several books about 19th-century photo processes and photographers. 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.
He died in Gettysburg, Pennsylvania.