Eagles icon Chuck Bednarik dies
Concrete Charlie' defined the legend
Who is the most underrated defensive lineman in NFL history? - Quora
Remembering #60 on the Eagles: “Iron-man” Concrete Charlie
Chuck Bednarik's death caused by football injuries, daughter says
The Philadelphia Inquirer Bob Brookover column
Chuck Bednarik, NFL player and Hall of Famer, dies at 89, NFL
Philadelphia Eagles great Chuck Bednarik dies at 89
Remembering #60 on the Eagles: “Iron-man” Concrete Charlie
Who is the best defensive player in the NFL right now? - Quora