After World War II
In November 1949 he became executive director of the American Mathematical Society where he served until 1954. From 1954-1961 he was professor and chairman of the Department of Mathematics at Washington University in St. Louis, Missouri, and then from 1961 professor and chairman of the Department of Mathematics at Case Western Reserve University in Cleveland, Ohio until his death.
During this latter period he became interested in teaching, and directed several educational movies as part of the Calculus Film Project of the Educational Media Committee of the Mathematical Association of America.
He was killed accidentally when hit by a car while riding his bicycle.
Read more about this topic: Holbrook Mann Mac Neille
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