Negro National League was a Major League for the Afro-American Players. * 1920: Formation of NNL consisting of 8 teams — Chicago American Giants, Detroit Stars, Kansas City Monarchs, Indianapolis ABCs, St. Louis Giants, Cuban Stars, Dayton Marcos and Chicago Giants. * 1921: Dropped Dayton Marcos; Added Columbus Buckeyes. * 1922: Dropped Columbus Buckeyes, Chicago Giants, St. Louis Giants; Added Cleveland Tate Stars, Pittsburgh Keystones, St. Louis Stars. * 1923: Dropped Cleveland Tate Stars (mid-season), Pittsburgh Keystones; Added Toledo Tigers (mid-season), Milwaukee Bears. * 1924: Dropped Toledo Tigers, Milwaukee Bears, Indianapolis ABCs (mid-season); Added Cleveland Browns, Birmingham Black Barons, Memphis Red Sox (mid-season). * 1925: Dropped Cleveland Browns; Ad