Indiana-Ohio was an Independent League in 1907 and 1923, 1924 and in 1908 was a Class D League

1907   Bluffton IN, Decatur IN, Kokomo-Sharpesville In, Portland IN, Richmond IN, Van Wert OH

1908   Huntington IN, Munice IN, Richmond, IN, Van Wert, OH; Bluffton, Kokomo-Sharpesville, Decatur left the league, during the Season

1923   Angola In, Auburn In, Bryan Oh, Butler In, Fort Wayne In, Garrett IN

1924   Angola In, Bryan Oh, Celina, Oh, Delphos Oh, Lima Oh, New Bremen Oh, Ottawa Oh, Wapakoneta Oh

NOTE 1 - See also Indiana-Ohio/Ohio-Indiana League