Dick Butkus, fearsome Hall of Fame Chicago Bears linebacker, dies at 80 - ABC News
Pro Football Journal: Chicago Bears All Career-Year Team
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
Pro Football Journal: Chicago Bears All Career-Year Team
Pro Football Journal: The NFL's Top Pre-WWII Ends
Was Brandon Marshall the Best Bears Receiver Ever? Meet Harlon Hill – Chicago Magazine
Pro Football Journal: Chicago Bears All Career-Year Team
Pro Football Journal: The 1963 Chicago Bears: I Decided We Needed the Ball
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
Bears known for superstar middle linebackers