Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron
George Halas was a pro basketball pioneer as well
Jack Silverstein Profile and Activity - Page 4 - Windy City Gridiron
Chicago Bears News: August 29, 2019 - Windy City Gridiron
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
Little Village magazine issue 305: Apr. 2022 by Little Village Magazine - Issuu
George Halas Through the Years
Larry Schmitt, Author at Big Blue Interactive
George Halas Through the Years
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times