I too an searching the HAUSWIRTH name and found the BUTTE, Montana Hauswirths. Residing only a few hundred miles from Butte, I made a trip to Butte to try and establish whether there was link of my Hauswirth family with the Butte , Montana Hauswirths.
I was pleasantly surprised to find a very good archives in Butte located in an old fire hall. I found a great deal of information of John and Simon Hauswirth as they built the first Hotel in Butte. Simon was a GAR member so I found pictures of he and his son Charles Hauswirth who become Mayor of Butte and was a very popular Mayor.
Charles Hauswirth founded a newspaper in Butte called the Eyeopener and many Hauswirth pictures were in this paper. There were over four hundred issues of this paper in the Butte archives and I would suggest you search for John's picture in these papers. Simon and Charles being so well known, there are a lot of pictures of them.
I was unhappy to find my Hauswirths were not linked to the Butte Hauswirths unless it is in Europe. I finished my search by visiting the graves of many of these Hauswirths in the Butte cemetery. I did stand at the graves of John and Kunigonda Hauswirth. Good luck in your search.