Annexation of Sudetenland
Oct 1 Germany annexes Sudetenland (1/3 of Czechoslovakia) following the Munich Agreement
Bob Feller
Oct 2 Future Baseball Hall of Fame pitcher Bob Feller strikes out record 18 Detroit Tigers; his Cleveland Indians still lose 4-1 at Cleveland Stadium
- Oct 2 New York Yankees pitcher Lefty Gomez beats Chicago Cubs, 6-3 in Game 2 at Wrigley Field; sets record of 6 World Series wins without a loss
- Oct 4 Baseball World Series: NY Yankees win third straight championship; beat Chicago Cubs, 8-3 at Yankee Stadium for 4-0 sweep
- Oct 7 Germany requires all Jewish passports be stamped with letter J
Shostakovich's 1st String Quartet
Oct 10 Premiere performance of Dmitri Shostakovich's 1st String Quartet
Billy the Kid
Oct 16 Aaron Copland's & Eugene Loring's ballet "Billy the Kid" premieres in Chicago
- Oct 21 Japanese troops occupies Canton
- Oct 22 Chester Carlson has 1st successful experiment in electrophotography, later sold to the Haloid Company and dubbed "Xerox copying"
- Oct 22 President of Czechoslovakia Edvard Beneš goes into exile in London, in the aftermath of the Munich agreement and German annexation of Sudetenland
- Oct 24 US forbids child labor in factories
- Oct 25 American Archbishop of Dubuque (Iowa), Francis J. L. Beckman, denounces Swing music as "a degenerated musical system... turned loose to gnaw away at the moral fiber of young people", warning that it leads down a "primrose path to hell".
- Oct 25 Japanese troops occupies Hankou & Wuhan
- Oct 27 DuPont announces its new synthetic polyamide fiber will be called "nylon"
- Oct 28 Farewell parade of International Brigade (Barcelona)
Panic Over War of the Worlds
Oct 30 A radio broadcast of H. G. Wells "The War of the Worlds", narrated by Orson Welles, allegedly causes a mass panic
- Oct 31 Great Depression: In an effort to try restore investor confidence, the New York Stock Exchange unveils a fifteen-point program aimed to upgrade protection for the investing public.