| Cuban Winter League |
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| Atlantic League |
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Allentown, Brooklyn, Easton, Elizabeth, Newark, Pottsville, Reading, Tamaqua |
| Texas Valley League |
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| California 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 Grays, Rochester Bronchos, Toronto Maple Leafs |
| Pacific Coast League |
A |
Los Angeles Angels, Oakland Oaks, Portland Beavers, San Francisco Seals |
| Southern Association |
A |
Atlanta Crackers, Birmingham Barons, Little Rock Travelers, Memphis Egyptians, Montgomery Senators, Nashville Volunteers, New Orleans Pelicans, Shreveport Pirates |
| Western League |
A |
Denver Grizzlies, Des Moines Champs, Lincoln Treeplanters, Omaha Rourkes, Pueblo Indians, Sioux City Packers |
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| Central League |
B |
Canton Chinamen, Dayton Veterans, Evansville River Rats, Grand Rapids Wolverines, South Bend Greens, Springfield Babes, Terre Haute Hottentots, Wheeling Stogies |
| Connecticut State League |
B |
Bridgeport Orators, Hartford Senators, Holyoke Papermakers, New Haven Blues, New London Whalers, Norwich Reds, Springfield Ponies, Waterbury Authors |
| Illinois-Indiana-Iowa League |
B |
Bloomington Bloomers, Cedar Rapids Rabbits, Clinton Infants, Decatur Commodores, Dubuque Dubs, Peoria Distillers, Rock Island Islanders, Springfield Senators |
| New England League |
B |
Brockton Tigers, Fall River Indians, Haverhill Hustlers, Lawrence Colts, Lowell Tigers, Lynn Shoemakers, New Bedford Whalers, Worcester Busters |
| 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 |
Aberdeen Black Cats, Butte Miners, Seattle Siwashes, Spokane Indians, Tacoma Tigers, Vancouver Canucks |
| Tri-State League |
B |
Altoona Mountaineers, Harrisburg Senators, Johnstown Johnnies, Lancaster Red Roses, Trenton Tigers, Williamsport Millionaires, Wilmington Peaches, York White Rozes/Reading Pretzels |
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| Hudson River League |
C |
Hudson Marines, Kingston Colonial Colts, Newburgh Hillies, Paterson Intruders, Poughkeepsie Colts, Yonkers |
| Ohio-Pennsylvania League |
C |
Akron Champs, Lancaster Lanks, Mansfield Pioneers, Marion Moguls, New Castle Nocks, Newark Newks, Sharon Giants, Youngstown Champs |
| South Atlantic League |
C |
Augusta Tourists, Charleston Sea Gulls, Columbia Gamecocks, Jacksonville Jays, Macon Brigands, Savannah Indians |
| Texas League |
C |
Austin Senators, Dallas Giants, Fort Worth Panthers, Galveston Sand Crabs, Houston Buffaloes, San Antonio Bronchos, Temple Boll Weevils, Waco Navigators |
| Virginia League |
C |
Danville Red Sox, Lynchburg Shoemakers, Norfolk Tars, Portsmouth Truckers, Richmond Colts, Roanoke Tigers |
| Western Association |
C |
Hutchinson Salt Packers, Joplin Miners, Leavenworth Convicts, Oklahoma City Mets, Springfield Midgets, Topeka White Sox, Webb City Goldbugs, Wichita Jobbers |
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| Cotton States League |
D |
Columbus Discoverers, Gulfport Crabs, Jackson Senators, Meridian Ribboners, Mobile Sea Gulls, Vicksburg Hill Billies |
| Eastern Illinois League |
D |
Centralia White Stockings/Paris Colts, Charleston Broom Corn Cutters, Mattoon Giants, Pana Coal Miners, Shelbyville Queen Citys, Taylorville Tailors |
| Empire State League |
D |
Auburn, Fulton, Geneva, Lyons, Oswego, Seneca Falls |
| Gulf Coast League |
D |
Alexandria White Sox, Lafayette Browns, Lake Charles Creoles, Monroe Municipals, Opelousas Indians, Orange Hoo-Hoos |
| Interstate League |
D |
Bradford Drillers, DuBois Miners, Erie Sailors, Franklin Millionaires, Kane Mountaineers, Oil City Oilers, Olean Refiners, Punxsutawney Policemen |
| Iowa League of Professional Baseball Clubs |
D |
Burlington Pathfinders, Jacksonville Lunatics, Keokuk Indians, Marshalltown Snappers, Oskaloosa Quakers, Ottumwa Packers, Quincy Gems, Waterloo Cubs |
| Maine State League |
D |
Augusta, Bangor White Sox, Biddeford, Lewiston, Manchester, Pine Tree, Portland Blue Sox, Waterville |
| New Hampshire State League |
D |
Barre-Montpelier, Concord Carnations, East Manchester Textiles, Franklin, Laconia/Plattsburg, Nashua, West Manchester/Rutland |
| North Texas League |
D |
Corsicana Oilers/Desperados, Greenville Hunters, Paris Athletics, Terrell Red Stockings |
| Northern-Copper Country League |
D |
Calumet Aristocrats, Duluth White Sox, Houghton Giants, Winnipeg Maroons |
| Ohio-Indiana League |
D |
Bluffton, Decatur, Kokomo, Portland, Richmond, Van Wert |
| Oklahoma-Arkansas-Kansas League |
D |
Bartlesville Boosters, Coffeyville Glassblowers, Fort Smith Soldiers, Independence Champs, McAlester Miners, Muskogee Redskins, Parsons Preachers, Tulsa Oilers |
| Pennsylvania-Ohio-Maryland League |
D |
Braddock Infants, Charleroi, East Liverpool, McKeesport Tubers, Steubenville Stubs, Uniontown Coal Barons, Washington, Zanesville |
| South Carolina League |
D |
Anderson Electricians, Darlington/Florence Fiddlers, Greenville Mountaineers, Orangeburg Edistoes, Spartanburg Spartans, Sumter Gamecocks |
| Southern Michigan League |
D |
Battle Creek Crickets, Bay City, Flint Vehicles, Jackson Convicts, Kalamazoo White Sox, Lansing Senators, Mount Clemens Bathers, Tecumseh |
| Southern New Hampshire League |
D |
Epping, Fremont, Kingston, Newton |
| Western Canada League |
D |
Calgary Bronchos, Edmonton Grays, Lethbridge Miners, Medicine Hat Hatters |
| Western Pennsylvania League |
D |
Beaver Falls Beavers, Butler White Sox, Clarksburg Bees, Connellsville Cokers, Fairmont Champions, Greensburg Red Sox, Latrobe Rooters/Cumberland Infants/Piedmont/Somerset/Kittanning, Scottdale Giants |
| Wisconsin State League |
D |
Eau Claire Tigers, Fond du Lac Webfoots, Freeport Pretzels, Green Bay Orphans, La Crosse Badgers, Madison Senators, Oshkosh Indians, Wausau Lumberjacks |
| Wisconsin-Illinois League |
D |
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| Cuban General League |
Foreign |
Almendares, Fe, Habana, Matanzas |
| Cuban League |
Foreign |
Azul, Columbia, Rojo, San Francisco |
| Cuban-American Negro Clubs Series |
Foreign |
Almendares, Habana, Philadelphia Giants |
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| Blue Mountain League |
Independent |
Bangor, Nazareth, Pen Argyl, Stroudsburg |
| California League |
Independent |
Alameda Grays, Oakland Commuters, Sacramento Cordovas, San Francisco Orphans, San Jose Prune Pickers, Stockton Millers |
| Eastern Colored Independents |
Independent |
Brooklyn Royal Giants, Cuban Giants, Cuban Stars, Philadelphia Giants |
| Nevada State League |
Independent |
Carson City, Goldfield, Reno, Tonopah |
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