How Doug Plank, Gary Fencik are working to curb the concussion culture they helped create - The Athletic
Bears legends Gary Fencik & Doug Plank talk about the violence of the game - Windy City Gridiron
Gary Fencik Recounts His Favorite Hit Ever as a Bear
Buddy Ryan: How Bears coach invented the 46 defense - Sports Illustrated
What are some Chicago Bears Legends that most non-Chicago fans would not remember? : r/CHIBears
Great Team Debates: If the 1985 Bears played the 1994 Niners, who wins? - Quora
Monsters: The 1985 Chicago Bears and the Wild Heart of Football: Cohen, Rich: : Books
At 66, former Bears safety Doug Plank has no regrets about his ferocious playing style - Chicago Sun-Times
The GQ+A: Rich Cohen on His New Book About the '85 Chicago Bears
Chicago Bears - Wikipedia