- Sep 1 Indian state of Tripura becomes a territory
- Sep 1 KELP (now KCOS) TV channel 13 in El Paso, TX (PBS) begins broadcasting
- Sep 2 Collapse of a rail bridge under a train kills 120 (India)
- Sep 2 San Francisco Washington-Jackson cable line replaced by bus service
- Sep 2 Juan Manuel Fangio of Argentina finishes 2nd in Italian GP at Monza to win his 3rd straight F1 World Drivers Championship by 3 points from Englishman Stirling Moss
- Sep 2 British Ferrari driver Peter Collins sportingly hands over his car to retired teammate Juan Manuel Fangio during season ending Italian Grand Prix at Monza; Fangio finishes 2nd to win F1 World Drivers Championship
- Sep 3 Tanks are deployed against racist demonstrators in Clinton, Tennessee
- Sep 3 American Johnny Longden becomes thoroughbred racing's winningest rider, breaking the record of 4,870 wins by British jockey Sir Gordon Richards; rides Arrogate to victory in the Del Mar Handicap
- Sep 5 20 die in a train crash in Springer NM
- Sep 7 Bell X-2 sets Unofficial manned aircraft altitude record 126,000'+
- Sep 8 Harry Belafonte's album "Calypso" goes #1 & stays #1 for 31 weeks
- Sep 9 African Party for Liberation of Guinea-Bissau & Cape Verde forms
TV Show Appearance
Sep 9 Elvis Presley appears on the Ed Sullivan Show for the 1st time

Elvis Presley

Ed Sullivan
US Men's Tennis Open
Sep 9 US National Championship Men's Tennis, Forest Hills, NY: In an all-Australian final Ken Rosewall wins his first US singles title, beating Lew Hoad 4-6, 6-2, 6-3, 6-3

Ken Rosewall

Lew Hoad
US Open Women's Tennis
Sep 9 US National Championship Women's Tennis, Forest Hills, NY: In an all-American final Shirley Fry Irvin beats Althea Gibson 6-3, 6-4 for her only US singles crown

Althea Gibson
Event of Interest
Sep 11 Cincinnati Reds outfielder Frank Robinson ties rookie record with his 38th HR

Frank Robinson
- Sep 11 Vladimir Kuts runs world record 10k (28:42.8)
Baseball Record
Sep 11 Yanks Yogi Berra ties career record for HRs (236) by a catcher

Yogi Berra
IBM 305 RAMAC
Sep 14 IBM introduces the RAMAC 305, 1st commercial computer with a hard drive that uses magnetic disk storage, weighs over a ton
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Baseball Record
Sep 18 Mickey Mantle is 8th to hit 50 HRs in a season

Mickey Mantle
- Sep 19 1st international conference of black writers & artists meets (Sorbonne)
- Sep 21 New York Yankees set dubious MLB record, stranding 20 on base; Mickey Mantle hits a 500' plus homer but rival Boston Red Sox win 13-9 at Fenway Park
- Sep 25 Transatlantic telephone cable goes into operation from Newfoundland to Oban
- Sep 25 Brooklyn Dodger Sal Maglie no-hits Philadelphia Phillies, 5-0
Event of Interest
Sep 28 "Johnny Carson Show" TV Variety last airs on CBS-TV

Johnny Carson
- Sep 28 RCA Records reports Elvis Presley sold over 10 million records
- Sep 29 "I Love Mickey" by Mickey Mantle & Teresa Brewer peaks at #87
- Sep 29 "Oh! Susanna" debuts on CBS-TV
- Sep 29 Yanks Mickey Mantle hits his 52nd HR of season
- Sep 30 Phillies Robin Roberts gives up a major league record 46th HR
- Sep 30 White Sox Jim Derrington, 16, is youngest to start a game (he loses)