Casares, Bears' third-leading rusher, dies at 82
Best Bears running backs: Payton, then the rest – Hartford Courant
Original Miami Dolphin Rick Casares Passes Away – Tales from the AFL
The Life And Career Of Walter Payton (Complete Story)
Here's a Tampa Tribune article - Ghosts of the Orange Bowl
1963 Bears: Where are they now?
Taunting penalty on Chicago Bears pass rusher Cassius Marsh draws heavy criticism from NFL world: 'The league should be ashamed'
Ranking the 100 best Bears players ever: No. 36, Rick Casares
Chicago Bears - Wikipedia
Jay Cutler, Martellus Bennett combine to rally Bears past Vikings – New York Daily News