I've had to dig a little to make sure my thoughts and recollection of what happened to these coaches have changed/faded in the 25 some years I have been following Iowa BB (Mr. Davis was the first coach I really paid attn to, the others I only know much about because of friends/people talking about them). My recollection of Olson, Raveling, and MIller is all from what I have heard from other people.
This has proven to be pretty fun. I love hearing from people who followed Iowa Basketball back in the 70s. It's also sparked my interest in looking up old articles.
Here's one I found on Alford, it's actually a pretty good editorial on his departure:
Steve Alford Left Iowa Because New Mexico is a Better Opportunity