When was each NFL team founded?

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Tags

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2. #teams
3. #decatur
4. #still
5. #chicago
6. #racine
7. #cardinals
8. #american
9. #founded
10. #association
11. #renamed
12. #staleys
13. #itself
14. #charter
15. #football
16. #national
17. #league
18. #exist
19. #later
20. #course
21. #professional
22. #crash
23. #bears
24. #arizona
25. #history