Site(s) for AAU Jr. Olympic Region VI Meets 1974-86?

[IndianaRunner]

Thanks to the great help of experts on this board, I now have confirmation via a different thread that some Indiana HS performances I'm researching happened at the AAU Jr. Olympic Region VI meets between 1974-86.

The final, missing piece of the puzzle is the locations where these AAU JO Region VI meets were held:

1974
1975
1976
1978
1981
1982
1983
1986

Any youth coaches, competitors, etc., who might be able to draw on their memories to identify these sites?

[IndianaRunner]

Did find some information about the 1986 meet, but unfortunately, its conflicting information!

Indiana's Best has a mark from the Region VI meet that year and indicates it was held in Dayton, OH...whereas MichTrack.com has some marks in the All-Time lists that indicate the Region VI meet that year was held in Indiana (no city specified)!