Celebrating a century of the NFL in 100 ways - Newsday
Early history of American football - Wikipedia
In NFL's land of Haves and Have Nots, Vikings could pose a problem for the Cowboys
The Five Most Memorable NFL Thanksgiving Moments - SI Kids: Sports News for Kids, Kids Games and More
Why Do the Lions and Cowboys Always Play on Thanksgiving Football? - Thrillist
NFL Thanksgiving Games: History, traditions and best moments - ESPN
Why the Detroit Lions always play on Thanksgiving
How the Tradition of the Detroit Lions Playing on Thanksgiving Got Started
NFL Thanksgiving: History behind Cowboys, Lions' annual holiday tradition
20 Thanksgiving Football History Facts and Stats [2023]
A brief history of Thanksgiving Day football - The Bucknellian