NFL history: 100 people who shaped the league, pro football - Sports Illustrated
NFL History: 100 objects that tell the story of football - Sports Illustrated
NFL ban on Black players lingers, Columnists
Bears Proud To Wear 1936 Uniforms
1967-12-15 George Halas coaches 497th and last game, win 318 vs Falcons for Bears
Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron
NFL Open Thread: The Harlem Brown Bombers
NFL All-Time Team: George Halas
After 75 years, Bears' 73-0 title win still stands in record
NFL's Depression-Era Ban on Black Players Lingers On in the Owners Box