American soccer writing, history & data.
| Season | Name | Abbreviation | Champion | Champion (Tier 2) | Champion (Tier 3) |
|---|---|---|---|---|---|
| 1946 | North American Soccer Football League | NASFL | Detroit Wolverines | --- | --- |
| 1947 | North American Soccer Football League | NASFL | Pittsburgh Indians S.C. | --- | --- |
| Organizing body | |
|---|---|
| North American Soccer Football League, Inc. | date unknown – date unknown |