The eight-team league had franchises based in Illinois and Iowa.
The league began and ended play in 1910, disbanding on July 19, 1910.
The Joliet Jolly-ites moved to Sterling on June 21.
Baseball Hall of Fame member Casey Stengel and Fritz Maisel were two league players who reached Major League Baseball after playing in the Northern Association.
[1] 1910 Northern Association The league disbanded July 19.