Why is Madden named after John Madden? The story of how a video game sensation was created
Madden NFL video game: Story of how John Madden, EA Sports connected
John Madden: A coach synonymous with football, thanks to a video game - Polygon
John Madden Remembered: “Dearly Loved”, “Nobody Had a Bigger Impact On The NFL” – Deadline
John Madden Football '93 - Wikipedia
John Madden Football (1990 video game) - Wikipedia
Madden NFL 23 - Introducing the FieldSENSE™ Gameplay System - Electronic Arts
Madden NFL 2001 - Wikipedia
John Madden dead: NFL icon behind Madden video game series dies at 85
John Madden, former Hall of Fame NFL coach and broadcaster, dies at 85 - ABC News
Coach, broadcaster, esports icon - Inside the legacy of John Madden - ESPN