Who invented the NFL?

In September of 1920, professional football teams from four states (Ohio, Indiana, Illinois, and New York) met and created a league called the American Professional Football Association. The first APFA game was played on October 3, 1920 between the Dayton Triangles and the Columbus Panhandles with Dayton winning 14-0. Two years later the APFA would be renamed to the National Football League. The first team in the NFL was the Decatur Staley's (named after the owner, Staley, I don't know his first name) in 1920. This team became the Chicago Staley's in 1921, and the Great Chicago Bears in 1922. Go Bears!!