Ken Stabler, Quarterback Who Led Raiders to Title, Dies at 69 - The New York Times
Super Bowl Champion Quarterback Ken Stabler Had CTE - TheWrap
Outside The Lines -- NFL great Ken Stabler diagnosed with CTE after death - ESPN
Ken Stabler: Ex-Oakland Raiders, Alabama QB dies at 69 - Sports Illustrated
Legendary NFL quarterback and former Oakland Raider Ken Stabler dies at 69 - ABC7 Los Angeles
5 years ago, Raiders legendary QB Ken Stabler died and it still stings
John Madden says Ken Stabler's death a 'shock to all of us'
Former Raiders quarterback Ken Stabler dies at 69
Ken Stabler, a Magnetic N.F.L. Star, Was Sapped of Spirit by C.T.E. - The New York Times