- Dec 1 Game of Bingo invented by American toy salesman Edwin S. Lowe
- Dec 2 First skull of Peking man found in the caves of Zhoukoudian, 50 km outside of Peking, China. Later dated roughly 750,000 years old. [1]
NHL Record
Dec 3 Boston Bruins beat the Montreal Canadiens 3-1, the first win of an NHL record 14-game winning streak, and a 22-game home winning streak
- Dec 5 1st US nudist organization, the American League for Physical Culture in New York City
- Dec 6 Turkey introduces female suffrage
- Dec 7 PGA Championship Men's Golf, Hillcrest CC: Defending champion Leo Diegel defeats Johnny Farrell, 6 & 4 in the final
Nobel Prize
Dec 10 Nobel Prize for Physiology or Medicine jointly awarded to Christiaan Eijkman and Sir Frederick Gowland Hopkins for the discovery of vitamins
- Dec 14 Alexander Zaimis elected president of Greece
- Dec 15 Swiss pilot Walter Mittelholzer is the first to fly over Mt. Kilimanjaro
- Dec 15 National Football League Championship: Green Bay Packers (12-0-1) win first past the post title
- Dec 16 Chic Blackhawks 1st game at Chicago Stadium, beat Pittsburgh Pirates, 3-1
- Dec 20 Heinie Wagner replaces Bill Carrigan as Red Sox manager
- Dec 20 Mount Davidson dedicated as a San Francisco city park
- Dec 21 1st group hospital insurance plan offered (Dallas Tx)
Historic Event
Dec 21 Coco the Clown first appears for Bertram Mills Circus in Manchester, England
- Dec 25 Grimmett takes 6-146 for SA, Queensland all out 380 Crowd 5,390
Music Premiere
Dec 30 Cole Porter's musical "Wake Up And Dream" opens at the Selwyn Theatre, NYC; runs for 136 performances
- Dec 30 Sigma Gamma Rho Sorority incorporates
