Today in Pro Football History: 1968: George Halas Retires as Head Coach of Bears
Happy Birthday, George Halas!
NFL's 1st decade was the 1920s, when teams came and went
Grave Story: George Halas (1895-1983) – RIP Baseball
The Championship Belt Series - Part 1 - Windy City Gridiron
George Halas, player-coach for the Decatur Staleys 1920. Art by Merv Corning.
George Halas PSA AutographFacts℠
George Halas: Father of the NFL Who Also Served in Both World Wars
Heretic, Rebel, a Thing to Flout: George Halas's Decatur Team Played Professional Football's First League Game
Bears in the Hall of Fame -- Chicago Tribune
The Buffalo All-Americans and the Staley Swindle - WNY Heritage
Chicago Bears unveil unique 2020 team photo