Greatest Coaches in NFL History - George Halas - ESPN
New England Patriots - Wikipedia
George Halas a real pro in fostering NFL-media relationship
How George Halas' columns for the Chicago Tribune, a field goal and a charity game helped the Chicago Bears prove their legitimacy in 1935
Bears add orange helmet for two games in 2022 - Chicago Sun-Times
Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron
To beat the Bears, Broncos' offensive line must be a brick wall - Mile High Report
1967-12-15 George Halas coaches 497th and last game, win 318 vs Falcons for Bears
NFL's Depression-era ban on black players lingers on in the owner's box - Chicago Sun-Times