Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
George Halas: Bears architect still going strong at 82 - Sports Illustrated Vault
George Halas came 50 minutes from losing the Bears in 1933 — until soon-to-be Cardinals owner Charles Bidwill bailed him out - Windy City Gridiron
George Halas was a pro basketball pioneer as well
Celebrating 100 years of the NFL: as told by the men in charge, NFL News
Bears vs. Packers still brings the 'heat'
For Fans of Chicago's 'Jewish Team,' New Coach Means New Hope - Tablet Magazine
NFL Rivalries: What is the oldest rivalry in the NFL History?
No Packers without Papa Bear? A different take on the NFL's oldest rivalry
Pompei: The complicated relationship of George Halas and Vince Lombardi - The Athletic
How George Halas' columns for the Chicago Tribune, a field goal and a charity game helped the Chicago Bears prove their legitimacy in 1935
How George Halas' columns for the Chicago Tribune, a field goal and a charity game helped the Chicago Bears prove their legitimacy in 1935
More details about Chicago Bears festival in Decatur announced
George Halas Through the Years
Bears vs. Patriots: Everything we know about Chicago's primetime win