Biologist and historian of photography
According to Wikipedia,
William Culp Darrah 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.