Why Do the Lions and Cowboys Always Play on Thanksgiving Football? - Thrillist
The Last Headbangers: NFL Football in the Rowdy, Reckless '70s - the Era That Created Modern Sports by Kevin Cook (2012-09-03): : Books
American football, Definition, History, Leagues, Rules, & Facts
The First Forward Pass in Pro Football History Was Against Moundsville — Or Was It? - Moundsville: PBS Film & Magazine
John Madden, Hall of Fame Coach and Broadcaster, Is Dead at 85 - The New York Times
The Winners and Losers From Thanksgiving Day Football - The Ringer
In NFL's land of Haves and Have Nots, Vikings could pose a problem for the Cowboys
NFL Thanksgiving Games: History, traditions and best moments - ESPN
Thanksgiving Football: A Long-Standing Tradition
NFL Thanksgiving Games: History, traditions and best moments - ESPN
American football on Thanksgiving - Wikipedia