The Greatest Night in Chicago Sports History - Windy City Gridiron
1985 Chicago Bears Team Signed Super Bowl XX Champs Logo Authentic Helmet Signed By (30) With Mike Ditka, Jim McMahon, Mike Singletary, Richard Dent (Schwartz COA)
Super Bowl MVPs: Ranking the first 56 award-winning performances
1963 Chicago Bears Super Bowl Champs Team Signed Full Size Helmet With JSA COA - Autographed NFL Helmets : Collectibles & Fine Art
Dallas Cowboys Super Bowl 30 Champs team signed full size authentic helmet
Can 'Athletic Intelligence' Be Measured? - The New York Times
Chicago Bears – Schwartz Sports Memorabilia