On October 7, 1871 much of Minnesota and Wisconsin were burning.
PRAIRIES IN FLAMES. – One Hundred and Fifty Miles Swept by Fire–Men, Women and Children Fleeing for Their Lives–Immense Loss of Property of all Kinds. Several Towns Destroyed–Great Damage Occasioned–Loss of Life. – View Article – NYTimes.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.
There were massive fires in Wisconsin, Michigan and the Rocky Mountains.
The worst of these fires occurred at Peshtigo, Wisconsin, where more than one thousand people burned to death.