The following are excerpts from 1993 letters written by track and field persons in support of Keith Gilbertson Sr.’s induction into the Snohomish High School Hall of Fame:  Stan Huntsman, 1988 U.S. Olympic track and field coach and a longtime friend and AAU coaching associate of Coach Gilbertson since the late 1950s, considered Gilby “one of the best athletic coaches in the history …