Edmonds Historical Museum Preserving and Sharing Our Heritage
John Madden Football - PC - 1988/1989
Madden NFL 23's Cover Star Is the Late John Madden Himself - IGN
Madden NFL Covers Through the Years, Gallery, History, Buying
Madden 24 Review - More Break Than Make
The covers of the Madden video game
The NFL – and a computer game franchise – has lost a legend in John Madden
John Madden on Madden: The early days of his video game, how he watches the NFL now and more - ESPN
Download John Madden Football - My Abandonware
History of the Madden Cover Athlete
John Madden Football for the Apple II
Madden Football History and EA's Other Notable Genesis Football Games - RetroGaming with Racketboy
25 years of Madden, the video game that changed football forever - The Verge
The History of Football Games - GameSpot