Southwest Washington League history
| Class D | 1903-1906 |
Teams (in alphabetical order)
Aberdeen Pippins, 1903-1906
Centralia Midgets, 1903-1904
Hoquiam Loggers, 1905-1906
Hoquiam Perfect Gentlemen, 1903-1904
Montesano Farmers, 1905
Olympia Senators, 1903-1906