| 1952 |
B |
Allentown Cardinals, Hagerstown Braves, Harrisburg Senators, Lancaster Red Roses, Salisbury Reds, Sunbury Giants, Wilmington Blue Rocks, York White Roses |
| 1951 |
B |
Allentown Cardinals, Hagerstown Braves, Harrisburg Senators, Lancaster Red Roses, Salisbury A's, Sunbury Giants, Wilmington Blue Rocks, York White Roses |
| 1950 |
B |
Allentown Cardinals, Hagerstown Braves, Harrisburg Senators, Lancaster Red Roses, Sunbury A's, Trenton Giants, Wilmington Blue Rocks, York White Roses |
| 1949 |
B |
Allentown Cardinals, Hagerstown Owls, Harrisburg Senators, Lancaster Red Roses, Sunbury Reds, Trenton Giants, Wilmington Blue Rocks, York White Roses |
| 1948 |
B |
Allentown Cardinals, Hagerstown Owls, Harrisburg Senators, Lancaster Red Roses, Sunbury Reds, Trenton Giants, Wilmington Blue Rocks, York White Roses |
| 1947 |
B |
Allentown Cardinals, Hagerstown Owls, Harrisburg Senators, Lancaster Red Roses, Sunbury Yankees, Trenton Giants, Wilmington Blue Rocks, York White Roses |
| 1946 |
B |
Allentown Cardinals, Hagerstown Owls, Harrisburg Senators, Lancaster Red Roses, Sunbury Yankees, Trenton Giants, Wilmington Blue Rocks, York White Roses |
| 1945 |
B |
Allentown Cardinals, Hagerstown Owls, Lancaster Red Roses, Trenton Spartans, Wilmington Blue Rocks, York White Roses |
| 1944 |
B |
Allentown Cardinals, Hagerstown Owls, Lancaster Red Roses, Trenton Packers, Wilmington Blue Rocks, York White Roses |
| 1943 |
B |
Allentown Wings, Hagerstown Owls, Lancaster Red Roses, Trenton Packers, Wilmington Blue Rocks, York White Roses |
| 1942 |
B |
Allentown Wings, Hagerstown Owls, Harrisburg Senators, Lancaster Red Roses, Trenton Packers, Wilmington Blue Rocks |
| 1941 |
B |
Allentown Wings, Bridgeport Bees, Hagerstown Owls, Harrisburg Senators, Lancaster Red Roses, Reading Brooks, Trenton Senators, Wilmington Blue Rocks |
| 1940 |
B |
Allentown Wings, Harrisburg Senators, Hazleton Mountaineers/Lancaster Red Roses, Reading Chicks, Sunbury Indians, Trenton Senators, Wilmington Blue Rocks, York Bees |
| 1939 |
C |
Allentown Dukes, Hazleton Mountaineers, Sunbury Senators, Trenton Senators |
| 1913 |
B |
Akron Giants, Canton Senators, Columbus Cubs, Erie Sailors, Steubenville Stubs, Wheeling Stogies, Youngstown Steelmen, Zanesville Flood Sufferers |
| 1903 |
N/A |
Brewton, Mobile, Montgomery Black Sox, Pensacola |
| 1901 |
N/A |
|
| 1900 |
B |
Columbus Senators/Anderson Anders, Dayton Veterans, Fort Wayne Indians, Mansfield Haymakers, New Castle Quakers, Toledo Mud Hens, Wheeling Stogies, Youngstown Little Giants/Marion Glass Blowers |
| 1899 |
B |
Dayton Veterans, Fort Wayne Indians, Grand Rapids Furniture Makers/Springfield Wanderers/Columbus Se, Mansfield Haymakers, New Castle Quakers, Toledo Mud Hens, Wheeling Stogies, Youngstown Little Giants |
| 1898 |
B |
Dayton Old Soldiers, Fort Wayne Indians, Grand Rapids Cabinet Makers, Mansfield Haymakers, New Castle Quakers, Springfield Governors, Toledo Mud Hens, Youngstown Puddlers |
| 1897 |
B |
Dayton Old Soldiers, Fort Wayne Indians, Mansfield Haymakers, New Castle Quakers, Springfield Governors, Toledo Mud Hens, Wheeling Nailers, Youngstown Puddlers |
| 1896 |
C |
Fort Wayne Farmers, Jackson Wolverines, New Castle Salamanders, Saginaw Lumbermen, Toledo Mud Hens, Washington Little Senators, Wheeling Nailers, Youngstown Puddlers |
| 1895 |
N/A |
Canton Deubers, Columbus Statesmen, Findlay Sluggers, Kenton Babes, Lima/Mansfield Kids, Steubenville Stubs/Akron Akrons/Lima Farmers, Twin Cities Hustlers, Wheeling Mountaineers |
| 1894 |
N/A |
|
| 1891 |
N/A |
|
| 1890 |
N/A |
|
| 1888 |
N/A |
Aurora, Bloomington Reds, Peoria Reds, Terre Haute Hoosiers |
| 1886 |
Sp |
Aurora, Bloomington Reds, Peoria Reds, Terre Haute Hoosiers |
| 1885 |
N/A |
Dayton, Erie, Frankfort, Lexington, Springfield, Youngstown |
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