- Oct 1 Spanish Cortes accept general female suffrage
- Oct 1 Philadelphia Athletics seek 3rd straight World Series baseball title; beat St. Louis Cardinals, 6-2 in opener at Sportsman's Park; lose series, 4-3
- Oct 1 The second (and current) Waldorf-Astoria Hotel is opened in New York.
- Oct 4 Dick Tracy comic strip by Chester Gould debuts
- Oct 4 Juan Esteban Montero becomes President of Chile
- Oct 5 1st nonstop transpacific flight, Japan to Wash (Herndon & Pangborn)
- Oct 5 Paul Green's "House of Connelly" premieres in NYC
- Oct 6 Joris van Severen forms Verdinaso (Union of Flemish National Solidarists)
- Oct 7 1st infra-red photograph, Rochester, NY
- Oct 10 A J Bennett hits H Garbarino for 1st scoring pass in Canada's Big 4
- Oct 10 St Louis Cards beat Philadelphia A's, 4 games to 3 in 28th World Series
- Oct 10 William Waltons "Belshazzar's Feast" premieres in Leeds
- Oct 11 100,000 extreme-right Germans form "Harzburger Front"
- Oct 12 1st International Conference on Calendar Reform
Christ the Redeemer
Oct 12 Christ the Redeemer statue opens standing 30 meters high (98 ft) on top of Mount Corcovado overlooking Rio de Janeiro, built by engineer Heitor da Silva Costa
Learn More- Oct 13 Musical "Everybody's Welcome" with T/J Dorsey premieres in NYC
Event of Interest
Oct 13 Noël Coward's "Cavalcade" premieres in London

Noël Coward
Theater Premiere
Oct 26 Eugene O'Neill's play cycle "Mourning Becomes Electra" premieres in NYC

Eugene O'Neill