| Cuban Winter League |
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| American Association |
A |
Columbus Senators, Indianapolis Indians, Kansas City Blues, Louisville Colonels, Milwaukee Brewers, Minneapolis Millers, St. Paul Saints, Toledo Mud Hens |
| Eastern League |
A |
Baltimore Orioles, Buffalo Bisons, Jersey City Skeeters, Montreal Royals, Newark Sailors, Providence Clamdiggers, Rochester Bronchos, Toronto Maple Leafs |
| Pacific Coast League |
A |
Los Angeles Angels, Oakland Oaks, Portland Giants, San Francisco Seals, Seattle Siwashes, Tacoma Tigers |
| Southern Association |
A |
Atlanta Crackers, Birmingham Barons, Little Rock Travelers, Memphis Egyptians, Montgomery Senators, Nashville Volunteers, New Orleans Pelicans, Shreveport Pirates |
| Western League |
A |
Colorado Springs Millionaires/Pueblo Indians, Denver Grizzlies, Des Moines Underwriters, Omaha Rourkes, Sioux City Packers, St. Joseph Saints |
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| Central League |
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 |
| Connecticut State League |
B |
Bridgeport Orators, Hartford Senators, Holyoke Paperweights, Meriden Silverites, New Haven Blues, New London Whalers, Norwich Reds, Springfield Ponies |
| Illinois-Indiana-Iowa League |
B |
Bloomington Bloomers, Cedar Rapids Rabbits, Davenport Riversides, Decatur Commodores, Dubuque Shamrocks, Peoria Distillers, Rock Island Islanders, Springfield Senators |
| New England League |
B |
Concord Marines, Fall River Indians, Haverhill Hustlers, Lowell/Taunton Tigers, Lynn Shoemakers, Manchester/Lawrence Colts, Nashua, New Bedford Whalers |
| New York State League |
B |
Albany Senators, Amsterdam-Gloversville-Johnstown Jags, Binghamton Bingoes, Scranton Miners, Syracuse Stars, Troy Trojans, Utica Pent-Ups, Wilkes-Barre Barons |
| Northwestern League |
B |
Bellingham Gillnetters, Everett Smokestackers, Vancouver Veterans, Victoria Legislators/Spokane Indians |
| Pacific National League |
B |
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| Hudson River League |
C |
Hudson Marines, Kingston Colonials, Newburgh Taylor-mades, Paterson Intruders, Peekskill, Poughkeepsie Colts, Saugerties/Pittsfield Hillies, Yonkers |
| Missouri Valley League |
C |
Fort Scott Hay Diggers, Muskogee Reds, Parsons Preachers, Pittsburg Miners, South McAlester/Fort Smith Giants, Tulsa Oilers, Vinita Cherokees, Webb City Goldbugs |
| Ohio-Pennsylvania League |
C |
Akron Buckeyes, Barberton Magic Cities, Braddock Infants, Bucyrus Bucks, Butler Bucks, Canton Protectives, Homestead Steel Workers, Kent Kings,
Lancaster Lanks, Lima Lees, Massillon Farmers, McKeesport Colts, Mount Vernon Clippers, Newark Idlewilds, Niles Crowites, Sharon Steels,
Steubenville Factory Men, Washington Patriots, Wooster Trailers, Youngstown Ohio Works, Zanesville Moguls |
| South Atlantic League |
C |
Augusta Tourists, Charleston Sea Gulls, Columbia Gamecocks, Jacksonville Jays, Macon Brigands, Savannah Pathfinders |
| South Texas League |
C |
Beaumont Millionaires/Brenham Orphans, Galveston Sand Crabs, Houston Buffaloes, San Antonio Bronchos |
| Texas League |
C |
Austin Senators, Corsicana Oilers, Dallas Giants, Fort Worth Panthers, Temple Boll Weevils, Waco Tigers |
| Western Association |
C |
Guthrie Senators, Joplin Miners, Leavenworth Orioles, Oklahoma City Mets, Sedalia Goldbugs, Springfield Highlanders, Topeka White Sox, Wichita Jobbers |
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| Canadian League |
D |
Brantford Indians, Ingersoll, Simcoe, St. Thomas Saints, Woodstock Maroons |
| Copper Country Soo League |
D |
Calumet Aristocrats, Hancock Infants, Lake Linden Lakers, Sault Ste. Marie Soos |
| Cotton States League |
D |
Baton Rouge Cajuns, Greenville Cotton Pickers, Hattiesburg Tar Heels, Jackson Blind Tigers, Meridian Ribboners, Natchez Indians/Mobile Sea Gulls, Pine Bluff Lumbermen, Vicksburg Hill Billies |
| Delta League |
D |
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| Empire State League |
D |
Fulton, Geneva, Lyons, Oswego, Rome, Seneca Falls |
| Interstate League |
D |
Bradford Drillers, Coudersport Giants, Erie Fishermen, Jamestown Hill Climbers/DuBois Miners, Kane Mountaineers, Olean Refiners |
| Iowa League of Professional Baseball Clubs |
D |
Boone Greyhounds, Burlington Flint Hills, Fort Dodge Gypsumites, Keokuk Indians, Marshalltown Grays, Oskaloosa Quakers, Ottumwa Snappers, Waterloo Microbes |
| Kansas State League |
D |
Ellsworth, Great Bend Millers, Hutchinson Salt Miners, Kingman/Hoisington, Lincoln Center, Minneapolis Minnies |
| Kentucky-Illinois-Tennessee League |
D |
Cairo Giants, Henderson Hens, Hopkinsville Hoppers, Paducah Indians, Princeton Infants, Vincennes Alices |
| North Texas League |
D |
Clarksville, Greenville Midlands, Paris/Hope Parasites, Texarkana |
| Northern League |
D |
Crookston Crooks, Duluth White Sox, Fargo, Grand Forks Forkers, St. Cloud-Brainerd/Superior Longshoremen, Winnipeg Maroons |
| Southwest Washington League |
D |
Aberdeen Pippins, Hoquiam Loggers, Montesano Farmers, Olympia Senators |
| Virginia-North Carolina League |
D |
Charlotte Hornets, Danville Tobacconists, Greensboro Farmers, Salisbury-Spencer/Winston-Salem Twins |
| Western Ontario Baseball Association |
D |
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| Wisconsin State League |
D |
Beloit Collegians, Freeport Pretzels, Green Bay Colts, La Crosse Pinks, Oshkosh Indians, Wausau Lumberjacks |
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| Cuban General League |
Foreign |
Almendares, Fe, Habana |
| Cuban League |
Foreign |
Alerta, Azul, Eminencia |
| Cuban-American Negro Clubs Series |
Foreign |
All-Cubans, Cuban X Giants, Fe, Habana |
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| Tri-State League |
Independent |
Altoona Mountaineers, Harrisburg Senators, Johnstown Johnnies, Lancaster Red Roses, Shamokin, Williamsport Millionaires, Wilmington Peaches, York Penn Parks |
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| Atlantic League |
No Classification |
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| California State League |
No Classification |
Fresno, Lodi, Presidio, San Francisco, San Jose, Stockton |
| Geauga County League |
No Classification |
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| Texas Valley League |
No Classification |
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