Wiley Post's Fortunate Misfortune
Oct 1 Oil field accident costs aviator Wiley Post his left eye, uses the settlement money to buy his 1st aircraft
- Oct 2 Bert Gibb kicks 9 singles as Hamilton Tigers beat Montreal AAA Winged Wheelers 12-10 in Montreal in Canadian Inter-provincial Rugby Football Union opening round
- Oct 3 1st congress of Pan European Movement (Pan-Europese Beweging) opens in Vienna
- Oct 3 English long distance runner Violet Piercy sets first recognised female marathon record in 3:40:22 on the Polytechnic Marathon course between Windsor and London
- Oct 4 Dahlia is officially designated as San Francisco city flower
- Oct 7 Actress Theo Mann-Master resigns from stage
- Oct 7 Italian Great Fascist Council forms
Colonial Institute
Oct 9 Dutch Queen Wilhelmina opens Royal Colonial Institution
- Oct 9 NBC (National Broadcasting Corporation) forms
- Oct 10 Baseball World Series: St Louis Cardinals beat New York Yankees, 3-2 at Sportsman's Park for 4 games to 3 series victory
Winnie the Pooh
Oct 14 A. A. Milne's book "Winnie the Pooh" released
Walter Johnson Retires
Oct 14 Walter Johnson retires, signs 2-year contract to manage Newark
- Oct 19 John C Garand patents semi-automatic rifle
Expulsion of Trotsky
Oct 19 Russian Politburo throws out Leon Trotsky and his followers
- Oct 20 Hurricane in Cuba, kills 600
The Punch that Killed Harry Houdini
Oct 22 Boxer J. Gordon Whitehead sucker punches magician Harry Houdini in the stomach in his dressing room at the Princess Theater in Montreal. The attack started or helped cause the appendicitis that would take Houdini's life 9 days later.
- Oct 24 Harry Houdini's last performance, at the Garrick Theatre in Detroit, Michigan
- Oct 25 Lester Patrick becomes 1st coach & gm of NY Rangers
- Oct 26 Arthur Goodrich's play "Caponsacchi" premieres in NYC
- Oct 26 Belgium stabilizes current value of franc (5 franc becomes 1 "Belga")
Assassination Attempt on Mussolini
Oct 31 Failed assassination attempt on Benito Mussolini by 15-year-old Anteo Zamboni, who was lynched on the spot