I am quite familar with the building you have described. I realize the building was just across the county line from Sheboygan County, but a potential source might be the Sheboygan County Historical Research Center in Sheboygan Falls, WI. I believe their site is www.schrc.org
. They have tens of thousands of photos and they may be of help.
Secondly, are you researching your family's history as well? I ask because families who lived in the time of your grandparents, etc. frequently married persons living in the area......we may be researching similar persons and could share info.....firstname.lastname@example.org