| Cuban Winter League |
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| California Winter League |
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| American Association |
AA |
Columbus Senators, 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 Indians, Providence Grays, Rochester Hustlers, Toronto Maple Leafs |
| Pacific Coast League |
AA |
Los Angeles Angels, Oakland Oaks, Portland Beavers, Sacramento Sacts, San Francisco Seals, Vernon Tigers |
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| Southern Association |
A |
Atlanta Crackers, Birmingham Barons, Chattanooga Lookouts, Memphis Chickasaws, Mobile Sea Gulls, Montgomery Rebels, Nashville Volunteers, New Orleans Pelicans |
| Western League |
A |
Denver Grizzlies, Des Moines Boosters, Lincoln Railsplitters, Omaha Rourkes, Sioux City Packers, St. Joseph Drummers, Topeka Jayhawks, Wichita Witches |
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| Central League |
B |
Akron Rubbermen, Canton Statesmen, Dayton Veterans, Erie Sailors, Fort Wayne Railroaders, Grand Rapids Black Sox, South Bend Benders, Springfield Reapers,
Terre Haute Terre-iers, Wheeling Stogies, Youngstown Steelmen, Zanesville Potters |
| Connecticut State League |
B |
Bridgeport Orators, Hartford Senators, Holyoke Papermakers, New Britain Perfectos, New Haven Murlins, Springfield Ponies, Waterbury Spuds |
| Illinois-Indiana-Iowa League |
B |
Bloomington Bloomers, Danville Speakers, Davenport Prodigals, Decatur Commodores, Dubuque Dubs, Peoria Distillers, Quincy Old Soldiers, Springfield Senators |
| New England League |
B |
Brockton Shoemakers, Fall River Brienies, Haverhill Hustlers, Lawrence Barristers, Lowell Grays, Lynn Leonardites, New Bedford Whalers, 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 |
Portland Colts, Seattle Giants, Spokane Indians, Tacoma Tigers, Vancouver Beavers, Victoria Bees |
| Texas League |
B |
Austin Senators, Beaumont Oilers, Dallas Giants, Fort Worth Panthers, Galveston Pirates/Sand Crabs, Houston Buffaloes, San Antonio Bronchos, Waco Navigators |
| Tri-State League |
B |
Allentown, Altoona Rams/Reading Pretzels, Harrisburg Senators, Johnstown/Chester Johnnies, Lancaster/Atlantic City Lanks, Trenton Tigers, Wilmington Chicks, York White Roses |
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| Canadian League |
C |
Berlin Busy Bees, Brantford Red Sox, Guelph Maple Leafs, Hamilton Kolts, London Tecumsehs, Ottawa Senators, Peterborough Whitecaps, St. Thomas Saints |
| Central International League |
C |
Duluth White Sox, Grand Forks Flickertails, Superior Red Sox, Winnipeg Maroons |
| South Atlantic League |
C |
Albany Babies, Columbia Comers, Columbus Foxes, Jacksonville Tarpons, Macon Peaches, Savannah Indians |
| Virginia League |
C |
Danville Red Sox, Lynchburg Shoemakers, Newport News Shipbuilders, Norfolk Tars, Petersburg Goobers, Portsmouth Pirates, Richmond Colts, Roanoke Tigers |
| Wisconsin-Illinois League |
C |
Appleton Papermakers, Aurora Blues, Green Bay Bays, Madison Senators, Oshkosh Indians, Racine Belles, Rockford Wolverines, Wausau Lumberjacks |
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| Appalachian League |
D |
Asheville Moonshiners, Bristol Boosters, Cleveland Counts, Johnson City Soldiers, Knoxville Reds, Morristown Jobbers |
| Blue Grass League |
D |
Frankfort Lawmakers, Lexington Colts, Maysville Rivermen, Paris Bourbonites, Richmond Pioneers, Winchester Hustlers/Nicholasville Orphans/Mount Sterling Orphan |
| Border League |
D |
Mount Clemens Bathers, Pontiac Indians, Port Huron Independents, Windsor, Wyandotte |
| California State League |
D |
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| Carolina Association |
D |
Anderson Electricians, Charlotte Hornets, Greensboro Patriots, Greenville Spinners, Spartanburg Red Sox, Winston-Salem Twins |
| Central Association |
D |
Burlington Pathfinders, Galesburg Pavers, Hannibal Cannibals, Keokuk Indians, Kewanee Boilermakers, Monmouth Browns, Muscatine Wallopers, Ottumwa Speedboys |
| Central Kansas League |
D |
Great Bend Millers, Junction City Soldiers, Lyons Lions, Manhattan Elks, Newton Railroaders/Minneapolis Minnies, Salina Insurgents |
| Cotton States League |
D |
Greenwood Scouts, Hattiesburg Timberjacks/Columbus Joy Riders, Jackson Senators, Meridian Metropolitans, New Orleans Little Pets/Yazoo City Zoos, Vicksburg Hill Billies |
| Eastern Michigan League |
D |
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| Illinois-Missouri League |
D |
Canton Highlanders, Champaign Velvets, Clinton Champs/Kankakee Kanks, Lincoln Abes, Pekin Celestials, Streator Speedboys |
| Iowa League Of Professional Baseball Clubs |
D |
Clear Lake, Emmetsburg, Estherville, Fort Dodge, Mason City |
| Kentucky-Illinois-Tennessee League |
D |
Cairo Egyptians, Clarksville Rebels, Evansville Yankees, Henderson Hens, Hopkinsville Hoppers, Paducah Chiefs |
| Massachusetts-Connecticut League |
D |
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| Michigan State League |
D |
Boyne City Boosters, Cadillac Chiefs, Ludington Mariners, Manistee Champs, Muskegon Speeders, Traverse City Resorters |
| Minnesota-Wisconsin League |
D |
Eau Claire Commissioners, La Crosse Outcats, Rochester Bugs, Winona Pirates |
| Missouri-Iowa-Nebraska-Kansas League |
D |
Auburn Athletics, Beatrice-Fairbury Milkskimmers, Falls City Colts, Hiawatha Indians, Humboldt Infants, Nebraska City Forresters |
| Mountain States League |
D |
Ashland-Catlettsburg Twins, Charleston Senators, Huntington Blue Sox, Ironton Forgers, Middleport-Pomeroy/Montgomery Miners, Williamson |
| Nebraska State League |
D |
Columbus Discoverers, Fremont Pathfinders, Grand Island Collegians, Hastings Third Citys, Kearney Kapitalists, Seward Statesmen, Superior Brickmakers, York Prohibitionists |
| Northern State of Indiana League |
D |
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| Ohio State League |
D |
Chillicothe Infants, Lima Cigarmakers, Mansfield Brownies, Marion Orphans/Ironton Diggers, Newark Skeeters, Portsmouth Cobblers |
| Ohio-Pennsylvania League |
D |
Alliance-Sebring Twins, Connellsville Cokers, East Liverpool Potters, McKeesport Tubers, New Castle Nocks, Salem Quakers/Fairmont Fairies, Sharon/Bridgeport Giants, Steubenville-Follansbee Stubs |
| Oklahoma State League |
D |
Anadarko Indians, Guthrie, Holdenville Hitters, McAlester Miners, Muskogee Indians, Oklahoma City Indians, Okmulgee Glassblowers, Tulsa Terriers |
| Rocky Mountain League |
D |
Canon City/Raton Swastikas, Colorado Springs Millionaires/Dawson Stags, La Junta Railroaders, Pueblo/Trinidad/Cheyenne Indians |
| South Central League |
D |
Cleburne Railroaders, Longview Cannibals, Marshall Athletics, Paris Boosters, Texarkana Twins, Tyler Elbertas |
| Southeastern League |
D |
Anniston Models, Bessemer Pipemakers, Gadsden Steel Makers, Huntsville Mountaineers/Talladega Highlanders, Rome Romans, Selma Centralites |
| Southern Michigan League |
D |
Adrian Lions, Battle Creek Crickets, Bay City Billikens, Flint Vehicles, Jackson Convicts, Kalamazoo Celery Pickers, Lansing Senators, Saginaw Trailers |
| Texas-Oklahoma League |
D |
Ardmore Giants, Bonham Tigers, Denison Katydids, Durant Choctaws/Hustlers, Greenville Highlanders, McKinney, Sherman Cubs, Wichita Falls Drillers |
| Union Association |
D |
Butte Miners, Great Falls Electrics, Helena Senators, Missoula, Ogden Canners, Salt Lake City Skyscrapers |
| Washington State League |
D |
Aberdeen Black Cats, Centralia Railroaders, Chehalis Farmers, Hoquiam Cougars |
| Western Canada League |
D |
Bassano Boosters, Calgary Bronchos, Edmonton Gray Birds, Red Deer Eskimos |
| Western Tri-State League |
D |
Boise Irrigators, La Grande Pippins, Pendleton Buckaroos, Walla Walla Bears |
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| Cuban League |
Foreign |
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| Cuban National League |
Foreign |
Almendares, Fe, Habana |
| Cuban-American Major League Clubs Series |
Foreign |
Almendares, Habana, Philadelphia Athletics |
| Cuban-American Negro Clubs Series |
Foreign |
Almendares, Habana, New York Lincoln Giants |
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| United States League |
Independent |
Chicago Green Sox, Cincinnati Pippins, Cleveland Forest City, New York Knickerbockers, Pittsburgh Filipinos, Reading, Richmond Rebels, Washington Senators |
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| Iowa State League |
No Classification |
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| Missouri-Kansas League |
No Classification |
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| Ohio Valley League |
No Classification |
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| Southern Texas League |
No Classification |
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| Virginia Mountain League |
No Classification |
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