- Sep 9 Great Lakes steamer "Erie" sinks off Silver Creek NY, kills 300
- Sep 9 Tom Hyer beats George McChester in 101 rounds at Caldwell's Landing, NY to become first American heavyweight boxing champion
Historic Event
Sep 24 British adventurer James Brooke obtains lands around the Sarawak river from the Sultan of Brunei
- Sep 30 Samuel Slocum patents the stapler