I've been attempting to do doing research on Sauk County Wisconsin for a Wondertainment/Factory/AWCY SCP. It is a 001 (don't scold me for trying that) which is why I'm doing such extensive research. You're probably thinking "just use Google" but, surprisingly, Google isn't much help. If anyone knows more about factories and or businesses in Sauk County, or better yet, are living in Sauk County and can help me with geography, that would be great. Thanks in advance.
There's also the Chamber of Commerce website for the largest city there, it has a listing for businesses.
Edit: County historical society… I'm not really sure what else I can do for you without more specifics. I'm not from Wisconsin.