Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron
George Halas named NFL's fourth best coach of all time
1937 nfl championship game highlights : r/nfl
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
New York Giants History - Page 2 of 3 - Big Blue Interactive
George Halas Played Dirty And It Cost Him Once Against a Chippewa Native
NFL history: 100 people who shaped the league, pro football - Sports Illustrated
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
The Chicago Bears' Top 5 running backs in franchise history
WCG's Jack Silverstein Brings History Into Focus - Windy City Gridiron
NFL history: 100 people who shaped the league, pro football - Sports Illustrated
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times