Earl D. Rainville
Professor Earl David Rainville (5 November 1907 – 29 April 1966) taught in the Department of Engineering Mathematics at the University of Michigan, where he began as an assistant professor in 1941. He studied at the University of Colorado, receiving his B.A. there in 1930 before going on to graduate studies at Michigan, where he received his Ph.D. in 1939 under the supervision of Ruel Churchill. He was the author of several textbooks.