Today in Pro Football History: 1968: George Halas Retires as Head Coach of Bears
Chicago Bears should explore these 3 David Montgomery trades
George Halas, NFL coach, Chicago Bears, Pro Football Hall of Fame
Bears100 Chicago Bears Official Website
Chicago Bears NFL Football Operations
Born Feb. 2: George Halas
Illini Connections All Over Bears Top 100 List - University of Illinois Athletics
Chicago Bears: A 'Decade-by-Decade History' Book, Chicago News
Chicago Staleys Team History
A Century of Chicago Bears Football - Chicago History Museum