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
On this date: George Halas retires an an NFL head coach. - ESPN - Stats & Info- ESPN
2012 DETROIT LIONS HISTORY BOOK - Detroit Lions Mediaroom
Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron
Larry Schmitt, Author at Big Blue Interactive - Page 2 of 3
NFL History: 100 objects that tell the story of football - Sports Illustrated
NFL History: 100 objects that tell the story of football - Sports Illustrated
NFL history: 100 people who shaped the league, pro football - Sports Illustrated