| Altoona Mountain Citys |
Altoona, Pennsylvania |
Union Association |
professional |
defunct |
| Baltimore Monumentals |
Baltimore, Maryland |
Union Association |
professional |
defunct |
| Boise Irrigators |
Boise, Idaho |
Union Association |
professional |
defunct |
| Boston Reds |
Boston, Massachusetts |
Union Association |
professional |
defunct |
| Butte Miners |
Butte, Montana |
Union Association |
professional |
defunct |
| Chicago Browns |
Chicago, Illinois |
Union Association |
professional |
defunct |
| Cincinnati Outlaw Reds |
Cincinnati, Ohio |
Union Association |
professional |
defunct |
| Great Falls |
Great Falls, Montana |
Union Association |
professional |
defunct |
| Great Falls Electrics |
Great Falls, Montana |
Union Association |
professional |
defunct |
| Helena Senators |
Helena, Montana |
Union Association |
professional |
defunct |
| Kansas City Cowboys |
Kansas City, Missouri |
Union Association |
professional |
defunct |
| Milwaukee Cream Citys |
Milwaukee, Wisconsin |
Union Association |
professional |
defunct |
| Missoula |
Missoula, Montana |
Union Association |
professional |
defunct |
| Murray Infants |
Murray, Utah |
Union Association |
professional |
defunct |
| Ogden Canners |
Ogden, Utah |
Union Association |
professional |
defunct |
| Philadelphia Keystones of Philadelphia |
Philadelphia, Pennsylvania |
Union Association |
professional |
defunct |
| Pittsburgh Stogies |
Pittsburgh, Pennsylvania |
Union Association |
professional |
defunct |
| Salt Lake City Skyscrapers |
Salt Lake City, Utah |
Union Association |
professional |
defunct |
| St. Louis Maroons |
St. Louis, Missouri |
Union Association |
professional |
defunct |
| St. Paul Apostles |
St. Paul, Minnesota |
Union Association |
professional |
defunct |
| Washington Nationals of Washington |
Washington, D.C. |
Union Association |
professional |
defunct |
| Wilmington Quicksteps |
Wilmington, Delaware |
Union Association |
professional |
defunct |