Agatha Christie mysteriously disappeared for 11 days.
The original 'Winnie the Pooh' novel written by A. A. Milne was released.
Violet Stewart Piercy, a long-distance runner from England, set the first recorded marathon win for women at 3:40:22.
Henry Ford changed employees' working schedules to 8-hour days, 5 days a week.
Paavo Nurmi ran a world record time of 3000 meters in 8 minutes and 25 seconds.
Thomas Edison spoke on the radio for the first time at a dinner for the National Electric Light Association.
The first confirmed trip to the North Pole was carried out by the Norge, a semi-rigid Italian-built airship.
The first flight over the North Pole was completed, flown by Richard E. Byrd with co-pilot Floyd Bennett.
Robert Goddard launched his second liquid-fueled rocket.
The world's first liquid-fueled rocket was launched.
Bertha Landes became the first female mayor of a major city (Seattle) in the US.
Walt Disney Studios was formed after previously being known as Disney Brothers Cartoon Studio.
The theory of Wave Mechanics by physicist Erwin Schrödinger was first taught in lectures.
Scottish inventor John Logie Baird changed the world of communication and entertainment forever when he demonstrated television for the first time.
