Bears release video ahead of controversial 1936 throwback jersey debut - Chicago Sun-Times
George S Halas – A Word on Papa Bear & 1963 NFL Championship Highlight
George Halas named NFL's fourth best coach of all time
How George Halas' columns for the Chicago Tribune, a field goal and a charity game helped the Chicago Bears prove their legitimacy in 1935
Duke Slater, NFL's 1st Black lineman, is now Hall of Famer
On this date: George Halas retires an an NFL head coach. - ESPN - Stats & Info- ESPN
NFL's Depression-era ban on black players lingers on in the owner's box - Chicago Sun-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
George Halas Through the Years
George Halas' FBI connection: File reveals late Chicago Bears owner, NFL cofounder helped feds 'on occasions' - Chicago Sun-Times
George Halas Pro Football Hall of Fame
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron