- Sep 3 Yevgeniy Abalakov reaches the highest point of the Soviet Union - Communism Peak (7495 m)
- Sep 4 1st airplane to exceed 300 mph (483 kph), JR Wendell, Glenview, Il
Coup d'état
Sep 4 Coup on Cuban president De Cespedes by Fulgencio Batista
Fulgencio Batista
Event of Interest
Sep 8 Second Spanish government of Manuel Azaña forms
Manuel Azaña
- Sep 10 1st Negro League All-Star Game, West beats East 11-7 (Comiskey Park)
- Sep 10 US National Championship Men's Tennis: Englishman Fred Perry robs Australian Jack Crawford of his Grand Slam chance; wins final 6-3, 11-13, 4-6, 6-0, 6-1
- Sep 11 Antwerps Sportpaleis, the largest indoor arena in Europe opens; renovated 2010-13
- Sep 12 Alejandro Lerroux forms new Spanish government
- Sep 12 Dutch parliament accepts ban on uniforms
Event of Interest
Sep 12 Leó Szilárd, waiting for a red light on Southampton Row in Bloomsbury, conceives idea of a nuclear chain reaction
Leó Szilárd
- Sep 13 Elizabeth McCombs becomes the first New Zealand woman Member of Parliament
- Sep 14 2 billion board feet of lumber destroyed in Tillamook Oregon fire
- Sep 19 NY Giants clinch the pennant
- Sep 20 Pittsburgh Steelers (as Pirates) play 1st NFL game, lose 23-2
- Sep 21 Trial against Marinus der Lubbe opens
- Sep 23 Yanks commit 7 errors in 1 game but beat Boston 16-12
- Sep 25 1st state poorhouse opens in Smyrna, Georgia
- Sep 25 5th "extermination campaign" against communists in Nanjing China
- Sep 26 Sidney Kingsley's "Men in White" premieres in NYC
- Sep 29 Little King, Cartoon Character, by Von Beuren, debut
- Sep 30 Berlin/Hart/Heyman/Myers ballet "As Thousands Cheer," premieres in NYC