The Pledge of Allegiance was first recited in American schools.
Source
Rio de Janeiro, Brazil, unveiled its iconic Christ The Redeemer statue.
The USSR's Voskhod 1 spacecraft became the first spaceflight with multiple crew members.
Mariner IX took two photos of Mars' north pole.
The world's strongest storm ever was recorded.
The USS Holland (SS-1) became the first modern submarine commissioned for the United States Navy.