Looking for vintage in Wisconsin

I'm trying to help out a collector in Wisconsin who needs a case for an IBM 5170 (AT).

Edit for clarification: It's just the case he needs, not an intact computer, though he might take the whole thing if that's what you've got.

http://classiccmp.org/dunfield/pc/h/pcat.jpg

P.S. I hope I'm posting this in the right place. I don't think this really qualifies as a "classified" listing, but if that's where I should have put it, I apologize, and please let me know for future reference. Thanks!