Conversation so far:
How long was Weeb Ewbank a coach?
Weeb Ewbank coached from 1928 to 1975.
Did Weeb Ewbank only coach at Washington University?
Weeb Ewbank has coached others such as the Cleveland Browns, Baltimore Colts, New York Jets.

Question: How long was he there?
Self-contained rewrite: How long was Weeb Ewbank at Washington University?