What were the original NFL teams?
The NFL: 100 Years of football - Los Angeles Times
History suggests 0-2 start is too difficult to overcome in the NFL
The Birth of the National Football League
10 Oldest Teams in the NFL
Eagles start 8-0: Here's a look at the other 28 NFL teams that
Inside the NFL: What were the original 8 NFL teams? - AS USA
List of NFL champions (1920–1969) - Wikipedia
NFL Team Values 2022: Dallas Cowboys Are The First Franchise Worth
Ranking all 32 teams' need at quarterback entering the 2023 NFL