- Sep 1 A murder conviction effectively forces the violent Irish anti-owner coal miners, the "Molly Maguires", to disband
- Sep 9 Lotta's Fountain (Kearny & Market) dedicated
- Sep 10 15th British Golf Open: Willie Park, Sr. shoots a 166 at Prestwick Golf Club
- Sep 11 1st newspaper cartoon strip
- Sep 29 US-Spanish relations decline in wake of Cuban rebellion