On October 7, 1871 much of Minnesota and Wisconsin were burning.
07 Oct 1871, 1 – Chicago Tribune at Newspapers.com
The following day was the worst fires in US history, with Chicago burning to the ground, and many other towns around the Great Lakes in flames.
11 Oct 1871, 1 – Chicago Tribune at Newspapers.com
There were massive fires in Wisconsin, Michigan and the Rocky Mountains.
14 Oct 1871, Page 2 – Harrisburg Telegraph at Newspapers.com
The worst of these fires occurred at Peshtigo, Wisconsin, where more than one thousand people burned to death.