Ohio-Pennsylvania League history
| Class C | 1905-1911 |
| Class D | 1912 |
Teams (in alphabetical order)
Akron Buckeyes, 1905
Akron Champs, 1907-1911
Akron Rubbernecks, 1906
Alliance-Sebring Twins, 1912
Braddock Infants, 1905
Bridgeport Giants, 1912
Butler Sailors, 1908
Canton Deubers, 1910-1911
Canton Watchmakers, 1908-1909
Connellsville Cokers, 1912
East Liverpool Potters, 1908-1912
Erie Sailors, 1908-1911
Fairmont Fairies, 1912
Girard Sailors, 1908
Homestead Steel Workers, 1905
Lancaster Lanks, 1905-1907
Mansfield Brownies, 1911
Mansfield Giants, 1906
Mansfield Pioneers, 1907
Mansfield Reformers, 1910
Marion Moguls, 1906-1907
McKeesport Colts, 1905
McKeesport Tubers, 1908-1910, 1912
New Castle Alliance, 1909
New Castle Nocks, 1907-1909, 1910-1911, 1912
New Castle Outlaws, 1906
Newark Cotton Tops, 1906
Newark Idlewilds, 1905
Newark Newts, 1907
Niles Crowites, 1905
Salem Quakers, 1912
Sharon Giants, 1907-1908, 1912
Sharon Steels, 1905-1906
Sharon Travelers, 1911
Steubenville Stubs, 1909, 1911
Steubenville-Follansbee Stubs, 1912
Youngstown Champs, 1907-1908
Youngstown Indians, 1909
Youngstown Ohio Works, 1905-1906
Youngstown Steelmen, 1910-1911
Zanesville Moguls, 1905-1906