The center portion of the courthouse in Oconto is one of the few surviving from the late 1800's. Additions on either side add needed space but at least the county expanded the building, rather than destroying this beautiful landmark and building anew.
The first courthouse burned down in 1891 and it was rebuilt for the tidy some of $50,000. In 1907 the upper levels burned and were rebuilt at that time. The site of the courthouse is also the site of a lynching that occurred in Oconto. Somewhere I have an eyewitness account of that event (as told to a reporter in the 1930's.) When I find it, I'll post it here.
To credit your find, email me the color that is mentioned on the dedication plaque at the veteran's memorial located on the courthouse grounds. No internet finds, please. Log your find and I'll get back to you if it's incorrect.
After your find, if you're into this sort of thing, there are some huge victorian-style houses located on Main street from the bygone days when Oconto was the center of the lumber industry in the area.
A newspaper article from 1931 describing the 40th anniversary of the laying of the courthouse cornerstone is here.