Maybe this won't help b/c there were too many of these families in the Calumet area, I don't know, but I know of a woman of Croatian descent (family name MIHELCIC or similar spelling) in the Calumet area looking for relatives. I know the name's not on your list, but I can look through my records for her name if you'd like or think it would help you find any of the families (or their histories) that you're looking for. Good luck!