Madden NFL Covers Through the Years - Sports Illustrated
Madden NFL 23 - Introducing the FieldSENSE™ Gameplay System - Electronic Arts
John Madden missed out on much money in video game decision
Football Royalty, Meeting John Madden for the First Time, The South Pasadenan
Is EA Sports' Madden named after John Madden?
Graphical Evolution of Madden NFL (1988-2020)
History of the Madden Cover: Who Has Earned the Honor?
EA Sports to continue using John Madden's name, likeness for video game
Madden NFL video game: Story of how John Madden, EA Sports connected
Why was the Madden video game series named after John Madden? - Quora
Madden NFL: Will Ferrell cast in film about origins of video game
Madden NFL cover was just part of John Madden's influence on EA's video game series - The Washington Post
Madden NFL' video game crosses 25-year goal line
Gold Jacket Spotlight: One Man, Three Careers - John Madden