The Mt. Rushmore Monument was dedicated.
Aviator Charles "Lucky Lindy" Lindbergh became the first pilot to fly solo non-stop from New York to Paris. 4,000,000 people lined the streets of New York for a ticker tape parade upon his return and President Coolidge awarded Lindbergh the first Distinguished Flying Cross medal.
87 died and over 1,000 were injured when a fast-moving tornado tore through St. Louis.
Calvin Coolidge announced he would not seek re-election in 1928.
Babe Ruth slammed 60 homers during the Yankees' regular season and two more in their World Series play against the Pittsburgh Pirates.
The Columbia Broadcasting System was launched.
The Federal Radio Commission was organized to stop signal and frequency wars between radio stations. Each station was allocated a specific spot on the dial and given a maximum signal wattage and nearly a third of the country's 1,100 stations were ordered off the air.
The first full-length "talkie", The Jazz Singer, starred Al Jolson.