Editor, Scott, first off welcome to GBO.
You covered many things in the above post. From what you say, it sounds like snopes got it right - Wisconsin. Yep, the 'net is full of erroneous tales, blogs, etc, no doubt (who could ever believed the Illinois version ). It sounds like you have the firsthand information on the bear/combine story(s). I browsed your newspaper website, but could not find the story on this (archives). If you could copy/paste it into a post, or perhaps post the link, that would be great. I'd enjoy seeing it. I found nothing on the Wisconsin DNR's website btw.
PB