When you say central Ohio, that can cover some pretty large areas. As a semi-truck driver I go down US-30 far too often
You should probably try local camera stores first - I have three places here in Madison Wi that will process 120 format C41 and can print 6x7 or smaller negs.
Failing that, there is a lab here in Madison, http://www.burne.com
that is excellent and reasonably priced. The other place I'd suggest you look into is Dwaynes photo - http://www.dwaynesphoto.com
Hope this helps,
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