| Cuban Winter League |
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| Independent Negro |
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Atlantic City Bacharach Giants, Baltimore Black Sox, Birmingham Black Barons, Brooklyn Royal Giants, Chattanooga Black Lookouts, Chicago Giants, Cincinnati Giants, Columbia CAG,
Cuban House of David, Cuban Stars West, Detroit Giants, Harlem Stars, Homestead Grays, Knoxville Giants, New York Black Yankees, New York Lincoln Giants,
Newark Browns, Pennsylvania Red Caps of NY, Philadelphia Hilldale Giants, Pittsburgh Crawfords, Santop's Broncos, Wilmington Quaker Giants |
| Wisconsin State League |
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| California Winter League |
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| American Association |
AA |
Columbus Red Birds, Indianapolis Indians, Kansas City Blues, Louisville Colonels, Milwaukee Brewers, Minneapolis Millers, St. Paul Saints, Toledo Mud Hens |
| International League |
AA |
Baltimore Orioles, Buffalo Bisons, Jersey City Skeeters, Montreal Royals, Newark Bears, Reading Keystones, Rochester Red Wings, Toronto Maple Leafs |
| Pacific Coast League |
AA |
Hollywood Stars, Los Angeles Angels, Mission Reds, Oakland Oaks, Portland Beavers, Sacramento Senators, San Francisco Seals, Seattle Indians |
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| Eastern League |
A |
Albany Senators, Allentown Buffaloes, Bridgeport Bears, Hartford Senators, New Haven Bulldogs, Norfolk Tars, Richmond Byrds, Springfield Ponies |
| Southern Association |
A |
Atlanta Crackers, Birmingham Barons, Chattanooga Lookouts, Little Rock Travelers, Memphis Chickasaws, Mobile Marines/Knoxville Smokies, Nashville Volunteers, New Orleans Pelicans |
| Texas League |
A |
Beaumont Exporters, Dallas Steers, Fort Worth Panthers, Galveston Buccaneers, Houston Buffaloes, San Antonio Indians, Shreveport Sports, Wichita Falls Spudders |
| Western League |
A |
Denver Bears, Des Moines Demons, Oklahoma City Indians, Omaha Packers, Pueblo Braves, St. Joseph Saints, Topeka Senators, Wichita Aviators |
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| Illinois-Indiana-Iowa League |
B |
Bloomington Cubs, Danville Veterans, Decatur Commodores, Evansville Hubs, Peoria Tractors, Quincy Indians, Springfield Senators, Terre Haute Tots |
| New York-Pennsylvania League |
B |
Binghamton Triplets, Elmira Colonels, Harrisburg Senators, Hazleton Mountaineers, Scranton Miners, Wilkes-Barre Barons, Williamsport Grays, York White Roses |
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| Middle Atlantic League |
C |
Beckley Black Knights, Charleroi Governors, Charleston Senators, Clarksburg Generals, Cumberland Colts, Fairmont Black Diamonds, Hagerstown Hubs/Parkersburg Parkers/Youngstown Tubers, Huntington Boosters,
Jeannette Jays/Altoona Engineers/Beaver Falls Beavers, Johnstown Johnnies, Scottdale Cardinals, Wheeling Stogies |
| Piedmont League |
C |
Asheville Tourists, Charlotte Hornets, Durham Bulls, Greensboro Patriots, Henderson Gamecocks, High Point Pointers, Raleigh Capitals, Winston-Salem Twins |
| Western Association |
C |
Bartlesville Broncos, Fort Smith Twins, Independence Producers, Joplin Miners, Muskogee Chiefs, Springfield Red Wings |
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| Arizona-Texas League |
D |
Bisbee Bees, El Paso Texans, Globe Bears, Nogales Internationals, Phoenix Senators, Tucson Missions |
| Cotton States League |
D |
Baton Rouge Standards, El Dorado Lions, Jackson Senators, Monroe Twins, Pine Bluff Judges, Vicksburg Hill Billies |
| East Texas League |
D |
Henderson Oilers, Kilgore Gushers, Longview Cannibals, Tyler Trojans |
| Mississippi Valley League |
D |
Burlington Bees, Cedar Rapids Bunnies, Davenport Blue Sox, Dubuque Tigers, Keokuk Indians, Moline Plowboys, Rock Island Islanders, Waterloo Hawks |
| Nebraska State League |
D |
Grand Island Islanders, Lincoln Links, McCook Generals, Norfolk Elks, North Platte Buffaloes, York Dukes |
| Palmetto League |
D |
Anderson Electrics/Spartanburg Spartans, Augusta Wolves, Florence Pee Deans, Greenville Spinners |
| Rio Grande Valley League |
D |
Corpus Christi Seahawks/LaFeria Nighthawks, Harlingen Ladds, McAllen Palms, San Benito Saints |
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| Cuban League |
Foreign |
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| Mexican League |
Independent |
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| Negro Southern League |
Negro |
Columbus Turfs, Little Rock Greys, Louisville Black Caps, Memphis Red Sox, Monroe Monarchs, Montgomery Grey Sox, Nashville Elite Giants |
| Texas Negro League |
Negro |
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| Texas-Louisiana League |
Negro |
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| American Negro League |
Negro Majors |
Baltimore Black Sox, Cuban Stars East, Homestead Grays, Philadelphia Hilldale Giants |
| Negro National League |
Negro Majors |
Chicago American Giants, Cleveland Cubs, Detroit Stars, Indianapolis ABCs, Kansas City Monarchs, Louisville White Sox, St. Louis Stars |