Crispell was a professor of psychiatry with the Dept. of Psychiatry from 1933 to 1946. He served during World War II as a lieutenant commander with the United States Naval Reserve Office.
Lowenbach was a professor of neurology from 1940 to 1963 and chair of the Dept. of Psychiatry from 1951 to 1953. He returned to Duke as a visiting professor in the early 1970s.