Dick Butkus, fearsome Hall of Fame Chicago Bears linebacker, dies at 80
Dick Butkus, fearsome Hall of Fame Chicago Bears linebacker, dies at 80, Sports
Former Chicago Bears linebacker Doug Buffone dead at 70 - The San Diego Union-Tribune
Doug Buffone: Monster of the Midway: My 50 Years with the Chicago Bears: Buffone, Doug, Coppock, Chet, Hampton, Dan: 9781629371672: : Books
Tests on Doug Buffone's brain can't determine whether he had CTE - Chicago Sun-Times
Dick Butkus, fearsome Hall of Fame Chicago Bears linebacker, dies at 80
Giants' Eli Manning Says Contract Will Not Be His Focus - The New York Times
Dick Butkus, fearsome Bears linebacker, dies at 80, Sports
Cards That Never Were: April 2015
Former Chicago Bears linebacker Doug Buffone dead at 70
Friends remember ex-Bear Doug Buffone: 'Hell of a football player, hell of a guy'
Sad day for Bears Nation' as former Bears captain Doug Buffone dies