Foster begins a 21-year tenure at the college as graduate manager and later, athletic director. He plays a pivotal role in the construction of almost every major sports facility on campus, including Bohler Gymnasium, Hollingbery Fieldhouse, and the original university golf course, and oversees enlargement of the football stadium.

Known as “Froggy” because of his drooping upper eyelids, Foster also hires (with Doc Bohler) the famous coaches who make up WSC’s “Golden Age” of athletics: Babe Hollingbery, Buck Bailey, Jack Friel, and others. He also helps pioneer sports broadcasting on KWSU, and introduces Dads’ Day to the WSU calendar of annual activities.