Ex-Raiders, Alabama QB Ken Stabler dead at 69
Ken Stabler, 69; former Oakland Raiders quarterback - The Boston Globe
Oakland Raiders remember Ken Stabler at halftime of season-opening game
Former Oilers quarterback passes away, Sports
Super Bowl 50: Agent says he brought concussion issue to NFL years ago, but 'No one listened' – The Times Herald
Ken Stabler, Former Oakland Raiders Quarterback and NFL MVP, Dies at 69 - WSJ
Ken Stabler: Ex-Oakland Raiders, Alabama QB dies at 69 - Sports Illustrated
Ken Stabler, American Football Wiki
Ken Stabler: Ex-Oakland Raiders, Alabama QB dies at 69 - Sports Illustrated