(For that matter, Cornell College in Mount Vernon, Iowa, also has quite a wrestling history. It's Division III now, but in 1947 won both the NCAA Division I and AAU national wrestling titles.)
The article also mentions the wrestling powerhouse of Waterloo West High School, the source of several wrestlers on the 1947 team. If you're interested in learning more about the 1947 championship, you can see this website for Arno Niemand's recent book on the subject.