The NFL in 1921
Chicago Staleys
Buffalo All Americans
Akron All Pros
Canton Bulldogs
Rock Island Independants
Evansville Crimson Giants
Green Bay Packers
Dayton Triangles
Chicago Cardinals
Rochester Jeffersons
Cleveland Indians
Washington Senators
Cincinnati Celts
Hammond Pros
Minneapolis Marines
Detroit Herald
Columbus Panhandles
Tonawanda Kardex...hahaha~~~~~
Muncie Flyers
Louisville Brecks
New York Giants
The Chicago Bears would show up in 1922.
In 1920 the first NFL season, only the Chicago Cardinals, a team name still used.