Chicago Bears: Buddy Ryan Players Who Became Coaches
Buddy Ryan, NFL coach and defensive mastermind, dies at 82
On Ryan's Farm, Memories Fresh and Fading - The New York Times
Remembering Buddy Ryan, the defensive genius who grew up on a Frederick, OK farm
Ron Rivera's untold stories of the 1985 Chicago Bears - ESPN
Chicago Bears - The '85 Bears won the championship because of the great defense and the great defensive coaching job that Buddy Ryan did. Period. -Mike Ditka
The 1985 Chicago Bears: A Legacy of Glory and of Pain
PHOTOS: Former Eagles head coach Buddy Ryan
Buddy Ryan, mastermind behind 1985 Bears defense, dies at 82 – Orange County Register