Complex sentence: Between 1946 to 1950, Underwood taught at Marietta College in Marietta, Ohio, and then served as Vice President of Salem College from 1950 to 1956.
Split into simpler sentences: Between 1946 to 1950, Underwood taught at Marietta College in Marietta, Ohio. He then served as Vice President of Salem College from 1950 to 1956.