Pro Football Hall of Fame — Wikipédia
Ranking the 100 best Bears players ever: No. 25, George Halas
From the NFL Archives: Turn of the Century Through the 1920s
Who Were the First NFL Teams Ever? - The Forkball
Bears to honor one decade each home game
The Beta Theta Pi - Fall 1985 by Beta Theta Pi - Issuu
The Championship Belt Series - Part 1 - Windy City Gridiron
Today in Pro Football History: Highlighted Year: Guy Chamberlin, 1922
History of the Decatur Staleys / Chicago Bears – Staley Museum
Bears to honor one decade each home game