From the record
“The Hazel Green Town Hall is a historic building in the village of Hazel Green, Wisconsin. Built in 1891, the building housed both the town clerk's office and the Hazel Green Opera House, a civic auditorium.”
Wikipedia article Hazel Green Town Hall, CC BY-SA 4.0.
One of 36 National Register listings published here for Grant County · listed in 1989 · category: Building · built in 1891, Boom Town style.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service