| 1951 |
A |
Charleston Senators, Dayton Indians, Flint Arrows, Grand Rapids Jets, Muskegon Reds, Saginaw Jacks |
| 1950 |
A |
Charleston Senators, Dayton Indians, Flint Arrows, Grand Rapids Jets, Muskegon Clippers, Saginaw Bears |
| 1949 |
A |
Charleston Senators, Dayton Indians, Flint Arrows, Grand Rapids Jets, Muskegon Clippers, Saginaw Bears |
| 1948 |
A |
Dayton Indians, Flint Arrows, Fort Wayne Generals, Grand Rapids Jets, Muskegon Clippers, Saginaw Bears |
| 1934 |
B |
Fort Wayne Chiefs, Grand Rapids Tigers, Lima Buckeyes, Muskegon Reds, Peoria Tractors, Springfield Red Birds |
| 1932 |
B |
Akron Tyrites/Canton Terriers, Dayton Ducks, Erie Sailors, Fort Wayne Chiefs, South Bend Twins, Youngstown Buckeyes |
| 1930 |
B |
Canton Terriers, Dayton Aviators, Erie Sailors, Fort Wayne Chiefs, Richmond Roses, Springfield Blue Sox |
| 1929 |
B |
Akron Tyrites, Canton Terriers, Dayton Aviators, Erie Sailors, Fort Wayne Chiefs, Springfield Dunnmen |
| 1928 |
B |
Akron Tyrites, Canton Terriers, Dayton Aviators, Erie Sailors, Fort Wayne Chiefs, Springfield Buckeyes |
| 1926 |
B |
|
| 1922 |
B |
Grand Rapids Billbobs, Ionia Mayors, Kalamazoo Celery Pickers, Lansing Senators, Ludington Mariners, Muskegon Daniels/Muskies |
| 1921 |
B |
Grand Rapids Joshers, Jackson/Ionia Mayors, Kalamazoo Celery Pickers, Lansing Senators, Ludington Mariners, Muskegon Muskies |
| 1920 |
B |
Grand Rapids Joshers, Kalamazoo Celery Pickers, Ludington Mariners, Muskegon Muskies |
| 1917 |
B |
Dayton Veterans, Evansville Evas, Fort Wayne Chiefs, Grand Rapids Black Sox, Muskegon Muskies, Richmond Quakers, South Bend/Peoria Benders/Distillers, Springfield Reapers |
| 1916 |
B |
Dayton Veterans, Evansville Evas, Grand Rapids Black Sox, Muskegon Reds, South Bend Benders, Springfield Reapers, Terre Haute Highlanders, Wheeling Stogies |
| 1915 |
B |
Dayton Veterans, Erie Sailors, Evansville River Rats, Fort Wayne Cubs, Grand Rapids Black Sox, Terre Haute Highlanders, Wheeling Stogies, Youngstown Steelmen |
| 1914 |
B |
Dayton Veterans, Evansville River Rats, Fort Wayne Railroaders, Grand Rapids Champs, Springfield Reapers, Terre Haute Terre-iers |
| 1913 |
B |
Dayton Veterans, Evansville River Rats, Fort Wayne Champs, Grand Rapids Bill-eds, Springfield Reapers, Terre Haute Terre-iers |
| 1912 |
B |
Akron Rubbermen, Canton Statesmen, Dayton Veterans, Erie Sailors, Fort Wayne Railroaders, Grand Rapids Black Sox, South Bend Benders, Springfield Reapers,
Terre Haute Terre-iers, Wheeling Stogies, Youngstown Steelmen, Zanesville Potters |
| 1911 |
B |
Dayton Veterans, Evansville Strikers/South Bend Bux, Fort Wayne Brakies, Grand Rapids Furniture Makers/Newark Skeeters, South Bend Benders/Grand Rapids Grads, Terre Haute Miners, Wheeling Stogies, Zanesville Potters |
| 1910 |
B |
Dayton Veterans, Evansville River Rats, Fort Wayne Billikens, Grand Rapids Raiders, South Bend Bronchos, Terre Haute Stags, Wheeling Stogies, Zanesville Potters |
| 1909 |
B |
Dayton Veterans, Evansville River Rats, Fort Wayne Billikens, Grand Rapids Wolverines, South Bend Greens, Terre Haute Hottentots, Wheeling Stogies, Zanesville Infants |
| 1908 |
B |
Dayton Veterans, Evansville River Rats, Fort Wayne Billikens, Grand Rapids Wolverines, South Bend Greens, Terre Haute Hottentots, Wheeling Stogies, Zanesville Infants |
| 1907 |
B |
Canton Chinamen, Dayton Veterans, Evansville River Rats, Grand Rapids Wolverines, South Bend Greens, Springfield Babes, Terre Haute Hottentots, Wheeling Stogies |
| 1906 |
B |
Canton Chinamen, Dayton Veterans, Evansville River Rats, Grand Rapids Wolverines, South Bend Greens, Springfield Babes, Terre Haute Hottentots, Wheeling Stogies |
| 1905 |
B |
Dayton Veterans, Evansville River Rats, Fort Wayne Railroaders/Canton Red Stockings, Grand Rapids Orphans, South Bend Greens, Springfield Babes, Terre Haute Hottentots, Wheeling Stogies |
| 1904 |
B |
Dayton Veterans, Evansville River Rats, Fort Wayne Railroaders, Grand Rapids Orphans, Marion Oilworkers/Peoria Distillers, South Bend Greens, Terre Haute Hottentots, Wheeling Stogies |
| 1903 |
B |
Anderson/Grand Rapids Orphans, Dayton Veterans, Evansville River Rats, Fort Wayne Railroaders, Marion Oilworkers, South Bend Greens, Terre Haute Hottentots, Wheeling Stogies |
| 1900 |
N/A |
Bloomington Blues, Danville Champions, Decatur Commodores, Peoria Distillers, Springfield/Jacksonville, Terre Haute Hottentots |
| 1897 |
C |
Cairo Egyptians, Evansville Brewers, Nashville/Henderson Centennials, Paducah Little Colonels, Terre Haute Hottentots, Washington Browns |
| 1896 |
N/A |
|
| 1888 |
N/A |
Allentown Peanuts, Binghamton Crickets, Easton, Elmira, Hazleton Pugilists, Jersey City Skeeters, Newark Trunkmakers, Scranton Miners,
Wilkes-Barre Barons |
| 1887 |
N/A |
|
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