To beat the Bears, Broncos' offensive line must be a brick wall - Mile High Report
George Halas Through the Years
Chicago Bears founder George Halas played a part in everything for NFL - Chicago Sun-Times
Super Bowl: What NFL isn't commemorating: 12-year ban on black players
NFL history: 100 people who shaped the league, pro football - Sports Illustrated
Grave Story: George Halas (1895-1983) – RIP Baseball
NFL's Depression-era ban on black players lingers on in the owner's box - Chicago Sun-Times
New York Giants History - Page 2 of 3 - Big Blue Interactive