Mike Ditka's Super Bowl XX Bears' sweater vest up for auction
Bears retire Ditka's No. 89 during halftime
Chicago Bears Legend Walter Payton Wasn't Originally #34
If Bears retired jerseys again, 5 players who should be honored – NBC Sports Chicago
NFL Confidential: Game is as big as it gets, but what about league's future?
Jan. 20, 1982: Bears' coaching drama comes to end — it's Mike Ditka – Orlando Sentinel
Does The Chicago Bears Decision To Retire Mike Ditka's Number Reflect Altruistic Or Self-Serving Behavior?
Bears to retire Mike Ditka's number
Chicago Bears to retire Mike Ditka's No. 89 – New York Daily News
Dick Butkus, Chicago Bears legend and Hall of Famer, dies at 80 - The Athletic