Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
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
Papa Bear' Halas honored with statue
George Halas: Bears architect still going strong at 82 - Sports Illustrated Vault
George S. Halas Biography
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
Papa Bear - George S. Halas - one of the cofounders of the NFL, and a legend in Chicago