The Sioux Falls Canaries (1902) and Le Mars Blackbirds (1903) won the league championships.
The Flandreau Indians, Le Mars Blackbirds, Rock Rapids Browns, Sheldon, Sioux City Cornhuskers and Sioux Falls Canaries were the charter members in 1902.
[2][3] The 1903 president of the Iowa–South Dakota League was J. U. Sammism, a Le Mars, Iowa attorney.
[4] 1902 Iowa–South Dakota League schedule Flandreau joined on June 20, and was awarded a record of (9–9), which made its overall first-half record 31–22.Flandreau won the second half and folded before the playoff against Sioux Falls.
[3] 1903 Iowa–South Dakota League Council Bluffs folded on June 20 with a record of 1–22.