| Southeastern League |
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| Cuban Winter League |
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| Atlantic League |
A |
Hartford Bluebirds, Lancaster Maroons, New Haven Texas Steers, New York Metropolitans, Newark Colts, Paterson Silk Weavers, Philadelphia Athletics, Wilmington Peaches |
| Eastern League |
A |
Buffalo Bisons, Providence Grays, Rochester Blackbirds, Scranton Miners, Springfield Ponies, Syracuse Stars, Toronto Canadians/Albany Senators, Wilkes-Barre Coal Barons |
| Western League |
A |
Columbus Buckeyes/Senators, Detroit Tigers, Grand Rapids Rippers/Gold Bugs, Indianapolis Hoosiers, Kansas City Blues, Milwaukee Brewers/Creams, Minneapolis Millers, St. Paul Apostles/Saints |
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| New England League |
B |
Augusta Kennebecs, Bangor Millionaires, Brockton Shoemakers, Fall River Indians, Lewiston, New Bedford Whalers/Browns, Pawtucket Phenoms, Portland |
| Pennsylvania State League |
B |
Carbondale Anthracites, Easton Dutchmen, Hazleton Quay-kers, Lancaster Maroons, Philadelphia Athletics, Pottsville, Shamokin/Reading Actives, York White Roses |
| Southern Association |
B |
Atlanta Crackers, Birmingham Bluebirds, Columbus Babies/River Snipes, Mobile Blackbirds, Montgomery Senators, New Orleans Pelicans |
| Virginia League |
B |
Lynchburg Hill Climbers, Norfolk Braves, Petersburg Farmers/Hampton Clamdiggers, Portsmouth Browns, Richmond Bluebirds, Roanoke Magicians |
| Western Association |
B |
Burlington Colts, Cedar Rapids Bunnies, Des Moines Prohibitionists, Dubuque, Peoria Distillers, Quincy Bluebirds, Rockford Forest City, St. Joseph Saints |
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| Interstate League |
C |
Fort Wayne Farmers, Jackson Wolverines, New Castle Salamanders, Saginaw Lumbermen, Toledo Mud Hens, Washington Little Senators, Wheeling Nailers, Youngstown Puddlers |
| New Pacific League |
C |
Portland Gladiators, Seattle Yannigans/Rainmakers, Tacoma Rabbits/Colts, Victoria Chappies |
| Texas Association |
C |
Austin Senators, Dallas Navigators, Denison Tigers, Fort Worth Panthers, Galveston Sandcrabs, Houston Buffaloes, San Antonio Missionaries, Sherman Students/Paris Midlands |
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| South New Jersey League |
D |
Bridgeton, Camden, Millville, Salem |
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| Cuban League |
Foreign |
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| Cumberland Valley League |
Independent |
Carlisle Colts, Chambersburg Maroons, Hagerstown Lions, Hanover Tigers |
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| Cochero League |
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Dover, Farmington, Rochester, Somersville |
| Lehigh Valley League |
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| New York State League |
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Amsterdam, Gloversville, Johnstown, Schenectady |
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| Blue Grass League |
No Classification |
Lexington, Maysville, Mount Sterling, Paris |
| California League |
No Classification |
California of San Francisco, Imperials of San Francisco, Oakland, San Francisco Californians, San Francisco Metropolitans, San Jose, Stockton |
| Canadian League |
No Classification |
Galt, Guelph, Hamilton, London |
| Central Connecticut League |
No Classification |
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| Central League |
No Classification |
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| Central Pennsylvania League |
No Classification |
Milton, Mount Carmel, Shamokin, Sunbury Pirates, Williamsport Demorest Bicycle Boys |
| Colorado State League |
No Classification |
Aspen Miners, Colorado Springs, Denver Gulfs, Gillette, Leadville Angels, Pueblo Rovers |
| Illinois League |
No Classification |
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| Indiana State League |
No Classification |
Anderson, Connersville, Elwood, Kokomo Blues, Logansport Ottos, Rushville |
| International League |
No Classification |
Farnham, Hull, Malone, Montreal, Plattsburgh, St. Albans, St. Hyacinthe |
| Kansas State League |
No Classification |
Chanute/Emporia, Coffeyville/Junction City, Independence, Parsons |
| Kentucky-Indiana League |
No Classification |
Evansville Hoosiers, Henderson, Hopkinsville, Madisonville, Owensboro Corncrackers, Washington Giants |
| Maine State League |
No Classification |
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| Michigan State League |
No Classification |
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| Missouri State League |
No Classification |
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| Naugatuck Valley League |
No Classification |
Ansonia Blues, Bridgeport Victors, Derby-Shelton Angels, New Haven Edgewoods, Torrington Tornadoes, Winsted Welcomes |
| Northeastern League |
No Classification |
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| Ohio State League |
No Classification |
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| Ohio-West Virginia League |
No Classification |
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| Pennyrile League |
No Classification |
Henderson, Hopkinsville, Madisonville, Owensboro |
| San Francisco City League |
No Classification |
California of San Francisco, Imperial of San Francisco, Oakland, Pacific of San Francisco |
| San Joaquin Valley League |
No Classification |
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| Schuykill Valley League |
No Classification |
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| Southern Illinois League |
No Classification |
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| Wisconsin State League |
No Classification |
Edgerton/Beaver Dam, Evansville, Fort Atkinson, Jefferson, Lake Mills, Sun Prairie, Waterloo |