Game Observations: Eight Takeaways From the Patriots Loss to the Eagles in the Regular-Season Opener
Giants to face Eagles in Philadelphia on Christmas Day
College football - Wikipedia
NFL on Christmas Day: Some of the most memorable games - The San Diego Union-Tribune
Dallas Cowboys Christmas games history
NFL Schedule Release: Week 1 Games and More - The New York Times
The Comeback, No. 36: Adrian Peterson, from crushing injury to MVP — an oral history - The Athletic
The Forgotten NFL Quarterback Who Dominated the Pre-Super Bowl Era
Baltimore's St. Frances Academy has a football team so good, no one in its league will play it - The Washington Post
All 21 NFL Christmas Day games
Did The WWI Christmas Truce Football Match Really Happen In 1914?
All 21 NFL Christmas Day games
Why Are There NFL Games on Christmas?
8 forgotten Christmas traditions of the UK