Dolphins and Chiefs Look Back on a Muddy Little Christmas in 1971 - The New York Times
Milestone Games, the most significant NFL game of each decade: The 1970'S - Ninety-Nine Yards: American Football
NFL, NBA Christmas: TV Ratings for Dec. 25-26, 2021 – The Hollywood Reporter
NFL History on Christmas Day - Acme Packing Company
Football History: NFL Christmas Games – Press Room Pass
How the Arizona Cardinals lost to Tampa Bay Buccaneers on Christmas
1971 AFC Divisional Playoff Game
12 Greatest Christmas Day Moments in NFL History!
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