NFL head coaches with the most wins
John Madden: John Elway remembers former Raiders coach
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Alan Pergament: John Madden memories with a Buffalo flavor – wings, weather and a rare crushing defeat
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NFL coaches, execs rank the best quarterbacks of the modern era - 2017 - ESPN
Denver Foe, John Madden Passes - A Look Back From a Bronco Fan
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Broncos react to John Madden's death: He was an icon in the NFL in many, many ways