Coldest NFL games in history: Here's a list of the 10 coldest football games ever played
Purdy: Extreme cold weather football is survival of the craziest – The Mercury News
The Coldest NFL Game Ever Played (1967)
Coldest NFL games: Green Bay Packers' 15 chilliest games at Lambeau
Packers-49ers wild-card matchup could be coldest game in NFL history - Sports Illustrated
Not a record, but Bears-Packers' temp still frigid at 11 degrees - ESPN - Chicago Bears Blog- ESPN
NFL: See the Coldest Games Ever Played
The 5 Coldest NFL Playoff Games Ever Played: Facts and Analysis - Daily Norseman
NFL: See the Coldest Games Ever Played