| Cuban Winter League | | |
| Blue Grass League | | |
| Independent Negro | | Almendares Cubans, Chicago American Giants, Chicago Black Sox, Chicago Giants, Cuban Stars of Havana, Havana Reds, Indianapolis ABCs, Long Branch Cubans, Louisville White Sox, New York Lincoln Giants, New York Lincoln Stars, Philadelphia Giants, St. Louis Giants, West Baden Sprudels |
| Louisiana State League | | |
| California Winter League | | |
| Imperial Valley League | | |
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| American Association | AA | Cleveland Spiders, Columbus Senators, Indianapolis Indians, Kansas City Blues, Louisville Colonels, Milwaukee Brewers, Minneapolis Millers, St. Paul Saints |
| International League | AA | Buffalo Bisons, Jersey City Skeeters, Montreal Royals, Newark Indians/Harrisburg Senators, Providence Grays, Richmond Climbers, Rochester Hustlers, Toronto Maple Leafs |
| Pacific Coast League | AA | Los Angeles Angels, Oakland Oaks, Portland Beavers, Salt Lake City Bees, San Francisco Seals, Venice/Vernon Tigers |
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| Southern Association | A | Atlanta Crackers, Birmingham Barons, Chattanooga Lookouts, Little Rock Travelers, Memphis Chickasaws, Mobile Sea Gulls, Nashville Volunteers, New Orleans Pelicans |
| Western League | A | Denver Bears, Des Moines Boosters, Lincoln Tigers, Omaha Rourkes, Sioux City Indians, St. Joseph Drummers, Topeka Jayhawks, Wichita Witches |
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| Canadian League | B | Brantford Red Sox, Guelph Maple Leafs, Hamilton Hams/Tigers, London Tecumsehs, Ottawa Senators, St. Thomas Saints |
| Central League | B | Dayton Veterans, Erie Sailors, Evansville River Rats, Fort Wayne Cubs, Grand Rapids Black Sox, Terre Haute Highlanders, Wheeling Stogies, Youngstown Steelmen |
| Illinois-Indiana-Iowa League | B | Bloomington Bloomers, Davenport Blue Sox, Decatur Commodores, Dubuque Dubs/Freeport Commons, Moline Plowboys, Peoria Distillers, Quincy Gems, Rockford Wakes |
| New England League | B | Fitchburg Burghers, Lawrence Barristers, Lewiston Cupids, Lowell Grays, Lynn Pirates, Manchester Textiles, Portland Duffs, Worcester Busters |
| New York State League | B | Albany Senators, Binghamton Bingoes, Elmira Colonels, Scranton Miners, Syracuse Stars, Troy Trojans, Utica Utes, Wilkes-Barre Barons |
| Northwestern League | B | Aberdeen Black Cats, Seattle Giants, Spokane Indians, Tacoma Tigers, Vancouver Beavers, Victoria Bees |
| Texas League | B | Beaumont Oilers, Dallas Giants, Fort Worth Panthers, Galveston Pirates, Houston Buffaloes, San Antonio Bronchos, Shreveport Gassers, Waco Navigators |
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| Northern League | C | Duluth White Sox, Fargo-Moorhead Graingrowers, Fort William-Port Arthur Canucks, Grand Forks Flickertails, St. Boniface Saints/Bonnies, Superior Red Sox, Virginia Ore Diggers, Winnipeg Maroons |
| South Atlantic League | C | Albany Babies, Augusta Tourists, Charleston Sea Gulls, Columbia Comers, Columbus Foxes, Jacksonville Tarpons, Macon Peaches, Savannah Colts |
| Southern Michigan League | C | Battle Creek Crickets, Bay City Beavers, Flint Vehicles, Jackson Vets, Saginaw Ducks, South Bend Factors |
| Virginia League | C | Newport News Shipbuilders, Norfolk Tars, Petersburg Goobers, Portsmouth Truckers, Rocky Mount Carolinians, Suffolk Tigers |
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| Atlantic League | D | |
| Bi-State League | D | Aurora Foxes, Elgin Watch Makers, Freeport Pretzels, Ottawa Indians, Racine Belles, Streator Boosters |
| Blue Ridge League | D | Chambersburg Maroons, Frederick Hustlers, Gettysburg Patriots, Hagerstown Blues, Hanover Hornets, Martinsburg Champs |
| Buckeye League | D | Akron Rubbernecks, Canton Giants, Findlay Finns, Lima Boosters, Marion Senators, Newark Newsocks |
| California State League | D | Alameda, Berkeley/San Francisco, Modesto Reds, Oakland Commuters, San Jose Bears, Stockton Millers |
| Central Association | D | Burlington Pathfinders, Cedar Rapids Rabbits, Clinton Pilots, Keokuk Indians, Marshalltown Ansons, Mason City Claydiggers, Muscatine Muskies, Waterloo Jays |
| Central Texas League | D | Corsicana Athletics, Ennis Tigers, Kaufman Kings, Mexia Gassers, Terrell Cubs, Waxahachie Athletics |
| Florida-Alabama-Georgia League | D | Americus Mackalees/Gainesville Sharks, Brunswick Pilots, Dothan, Thomasville Hornets, Valdosta Millionaires, Waycross Moguls |
| Georgia-Alabama League | D | Anniston Moulders, Griffin Lightfoots, La Grange Terrapins, Newnan Cowetas, Rome Romans, Talladega Tigers |
| Interstate League | D | Bradford Drillers, Hornell Maple Leafs, Jamestown Rabbits, Olean White Sox, Warren Bingoes, Wellsville Rainmakers |
| Middle Texas League | D | Austin Reps/Taylor Producers/Brenham Kaisers, Bartlett, Belton Braves, Brenham Huskies, Schulenburg Giants, Temple Governors |
| Nebraska State League | D | Beatrice Milkskimmers, Columbus Pawnees, Fairbury Shaners, Grand Island Champions, Hastings Reds, Kearney Buffaloes, Norfolk Drummers, York Prohibitionists |
| North Carolina State League | D | Asheville Tourists, Charlotte Hornets, Durham Bulls, Greensboro Patriots, Raleigh Capitals, Winston-Salem Twins |
| Ohio State League | D | Charleston Senators, Chillicothe/Huntington Babes/Maysville Angels, Frankfort Old Taylors, Ironton Nailers, Lexington Colts, Portsmouth Cobblers |
| Rio Grande Association | D | Albuquerque Dukes, Douglas Miners, El Paso Mackmen, Las Cruces Farmers, Phoenix Senators, Tucson Old Pueblos |
| Western Association | D | Denison Railroaders, Fort Smith Twins, McAlester Miners, Muskogee Mets, Oklahoma City Senators, Paris Red Snappers, Sherman Hitters, Tulsa Producers |
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| Cuban League | Foreign | |
| Cuban-American Negro Clubs Series | Foreign | Almendares, Habana, Indianapolis ABCs, San Francisco |
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| Colonial League | Independent | Brockton Pilgrims, Fall River Spindles, Hartford Senators, New Bedford Whalers, New Haven White Wings, Pawtucket Rovers, Springfield Tips, Taunton Herrings |