Why was the Madden video game series named after John Madden? - Quora
John Madden, Biography, Football, & Facts
NFL Hall of Famer John Madden Coached HBCU Great Players - HBCU Legends
What was John Madden's cause of death last year?
The history of the Madden Curse
John Madden, Hall of Fame coach and broadcaster, dies at 85
The final, beautiful goodbye of NFL legend John Madden - ESPN
John Madden: A coach synonymous with football, thanks to a video game - Polygon
What was John Madden's cause of death? - AS USA
John Madden's revolutionary impact, style will never be replicated - Sports Illustrated