The Longhorn Knothole Club 3000 strong

 The Longhorns never sold out a game during the pre and post-depression years. So UT allocated 3000 free seats to school-age fans and some high school bands. UT delivered Knothole Club memberships cards to some public schools. The kids got so rowdy during the game that UT and to put up a chain link fence to separate the Knot holes from the full-priced fans.