| Cuban Winter League | | |
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| Western Association | A | Chicago Maroons, Davenport Onion Weeders, Des Moines Prohibitionists, Kansas City Blues, Milwaukee Brewers/Creams, Minneapolis Millers, Omaha Omahogs/Lambs, Sioux City Corn Huskers, St. Louis Whites, St. Paul Apostles |
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| Cuban League | Foreign | |
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| Chicago Commercial League | | A. G. Spalding & Bros., Butler Bros., J. V. Farwell & Co., Jenney & Graham Gun Co., Putnam Clothing House, Strauss, Goodman, Yondorf & Co. |
| Philadelphia Region League | | Brandywine, Camden, Frankford, Germantown, Houston, Kensington, Norristown, Quaker City, Solar Tips, Somerset |
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| California League | No Classification | Oakland Greenhood & Morans, San Francisco Haverlys, San Francisco Pioneers, Stockton |
| California State League | No Classification | Oakland Clevelands, Oakland Tribunes, Sacramento, San Francisco, San Francisco Emersons, Santa Cruz |
| Central Atlantic League | No Classification | |
| Central Interstate League | No Classification | Bloomington Reds, Crawfordsville Hoosiers, Danville Browns, Davenport, Decatur, Dubuque, Lafayette, Peoria Reds, Rockford, Terre Haute Hoosiers |
| Central League | No Classification | Allentown Peanuts, Binghamton Crickets, Easton, Elmira, Hazleton Pugilists, Jersey City Skeeters, Newark Trunkmakers, Scranton Miners, Wilkes-Barre Barons |
| Central New York League | No Classification | Auburn Yankees, Canandaigua, Penn Yan, Seneca Falls, Waterloo |
| Central Pennsylvania League | No Classification | Ashland, Hazleton Pugilisits, Mahanoy City, Mount Carmel, Shamokin Maroons, Shenandoah Hungarian Rioters |
| Connecticut State League | No Classification | Bridgeport, Danbury, Derby, Meriden, Norwalk, Stamford, Waterbury |
| Eastern International League | No Classification | Belleville, Brockville, Kingston, Oswego, Watertown |
| Eastern Interstate League | No Classification | |
| Hudson River League | No Classification | |
| Indiana State League | No Classification | Elkhart, Fort Wayne, Frankfort, Lafayette, Logansport, Marion, South Bend |
| International Association | No Classification | Albany Governors, Buffalo Bisons, Hamilton Hams, London Tecumsehs, Rochester Jingoes, Syracuse Stars, Toronto Canucks, Troy Trojans |
| Interstate Association | No Classification | |
| Interstate League | No Classification | Aurora, Bloomington Reds, Peoria Reds, Terre Haute Hoosiers |
| New England Interstate League | No Classification | Dover, Haverhill, Nashua, Portsmouth Lillies, Rochester |
| New England League | No Classification | Lowell Chippies, Lynn Shoemakers, Manchester Maroons, Portland, Portsmouth Lillies, Salem Witches, Worcester Grays |
| New Mexico League | No Classification | |
| New York State League | No Classification | |
| Ohio State League | No Classification | |
| Saginaw Valley League | No Classification | |
| Southern League | No Classification | Birmingham Maroons, Charleston Seagulls, Memphis Grays, New Orleans Pelicans |
| Texas League | No Classification | Austin Senators/San Antonio, Dallas Hams, Fort Worth Panthers, Galveston Giants, Houston Babies/Red Stockings, San Antonio Missionaries/Cowboys |
| Texas-Southern League | No Classification | Dallas Hams, Galveston Giants, Houston Babies, New Orleans Pelicans, San Antonio Missionaries |
| Tri-State League | No Classification | Canton Nadjys, Columbus Senators, Jackson Jaxons, Kalamazoo Kazoos, Lima Lushers, Mansfield, Sandusky Fish Eaters, Toledo Maumees, Wheeling National Citys/Nailers, Zanesville Kickapoos |
| Upper Peninsula League | No Classification | |
| Western League | No Classification | Denver Mountain Lions/Mountaineers, Hutchinson, Leavenworth Soldiers, Lincoln Tree Planters, Newton |
| Western Pennsylvania League | No Classification | |