Michael McCaskey, who succeeded George Halas as Bears' leader, dies at 76
Grave Story: George Halas (1895-1983) – RIP Baseball
Today in Pro Football History: 1968: George Halas Retires as Head Coach of Bears
Dick Butkus, fearsome Hall of Fame linebacker for the Chicago Bears, dies at 80
73-0 Bears rout Washington to create history
Vintage photos from the NFL draft in Chicago – Hartford Courant
George Halas came 50 minutes from losing the Bears in 1933 — until soon-to-be Cardinals owner Charles Bidwill bailed him out - Windy City Gridiron
SPORTS OF THE TIMES; THE BEAR WHO REALLY WAS ONE - The New York Times
How George Halas' columns for the Chicago Tribune, a field goal and a charity game helped the Chicago Bears prove their legitimacy in 1935