The Football Player's Brain That Sparked the NFL's Concussion Crisis - The Atlantic
College Football History - Blood on the Gridiron: The True Story of the 1905 'Death Harvest' - Corn Nation
Pro football's troubled history of on-field medical emergencies
How football helped David Alcantar get his life back on track at COS
Mike Williams cause of death: The former WR has been taken off life support
Franco Harris, Steelers Hall of Fame Running Back, Dies at 72 - WSJ
Former NFL WR Mike Williams's death is under investigation - NBC Sports
Life and death on the gridiron
Aaron Hernandez's life and death were tragic, by his doing
15 Football (Soccer) Players Who Died On The Field - Discover Walks Blog
Former Illinois linebacker, Chicago Bears icon Dick Butkus dies at 80 - The Daily Illini