Northern Association
The Northern Association was a Class D minor league. It began and ended play in 1910, not even lasting the full season, disbanding on July 19. The Joliet club moved to Sterling on June 21. Clinton and Freeport disbanded on June 28; Elgin and Kankakee disbanded on July 11.
Casey Stengel and Fritz Maisel were the only two players to reach Major League Baseball after playing in the Northern Association.
Cities represented
- Clinton, Iowa: Clinton Teddies 1910
- Decatur, Illinois: Decatur Commodores 1910
- Elgin, Illinois: Elgin Kittens 1910
- Freeport, Illinois: Freeport Pretzels 1910
- Jacksonville, Illinois: Jacksonville Jacks 1910
- Joliet, Illinois: Joliet Jolly-ites 1910
- Kankakee, Illinois: Kankakee Kays 1910
- Muscatine, Iowa: Muscatine Pearl Finders 1910
- Sterling, Illinois: Sterling Infants 1910
Teams and statistics
President: C.A. Burton
| Team standings | W | L | PCT | GB | Managers |
| Elgin Kittens ### | 37 | 20 | .649 | - | Mal Kittridge |
| Muscatine Pearl Finders | 37 | 21 | .638 | .5 | Lou Walters |
| Kankakee Kays ### | 34 | 24 | .586 | 3.5 | Dan Collins |
| Jacksonville Jacks | 32 | 31 | .508 | 8 | Pants Rowland |
| Decatur Commodores | 30 | 32 | .484 | 9.5 | Del Williams / Charles O'Day / McGrew |
| Joliet Jolly-ites / Sterling Infants # | 24 | 34 | .414 | 13.5 | Hunkey Hines |
| Freeport Pretzels ## | 22 | 25 | .468 | NA | Forrest Plass |
| Clinton Teddies ## | 10 | 39 | .204 | NA | Ted Sullivan / John Marmen |
The league disbanded July 19.
| Player | Team | Stat | Tot | Player | Team | Stat | Tot | |
| Phil Nadeau | Joliet/Sterling | BA | .333 | Pop Eyler | Muscatine | W | 11 | |
| Fritz Maisel | Elgin | Runs | 49 | Thomas McTigue | Kankakee | W | 11 | |
| Harmony Van Dine | Jacksonville | Hits | 80 | Archie Hickman | Joliet/Sterling | W | 11 | |
| Buck Hopkins | Elgin | HR | 7 | Thomas McTigue | Kankakee | Pct | .786; 11-3 |