Tri-State Conference (1939-54)

Former Members
Elk Point (SD), 1939-40 thru 1946-47
Hawarden, 1939-40 thru 1952-53
Le Mars, 1939-40 thru 1945-46
Rock Rapids, 1947-48 thru 1952-53
Sioux City Leeds, 1941-42 thru 1952-53
South Sioux City (NE), 1939-40 thru 1952-53
Vermillion (SD), 1939-40 thru 1952-53

Membership Timeline
1953-54: Hawarden and Rock Rapids leave to help form the Siouxland ConferenceSioux City Leeds, South Sioux City (NE), and Vermillion (SD) leave. Conference disbands.
1947-48: Rock Rapids joins. Elk Point (SD) leaves. Membership remains at 5.
1946-47: Le Mars leaves. Membership decreases to 5.
1941-42: Sioux City Leeds joins. Membership increases to 6.
1939-40: HawardenLe Mars, South Sioux City (NE), Elk Point (SD), and Vermillion (SD) from the Tri-State Conference. Original membership is 5.