October 8 - Great Chicago Fire: A large fire in Chicago, Illinois preempts news reporting of the Peshtigo, Wisconsin fire, burns 1,200,000 acres (4,900 km²) in one day, eventually destroys about 17,450 buildings, kills about 250 people and leaves another 90,000 homeless. It is brought under control the next day.
October 27 the Comte de Chambord refuses to be crowned 'King Henry V of France' until France abandons its tricolour and returns to the old bourbon flag.