- A Westinghouse radio costs $10.
- Rising popular interest in African-American literature sparks the beginning of the Harlem Renaissance.
- Babe Ruth is traded by the Red Sox, the largest sum ever paid for a player at that time.
- Palmer Raids takes place, suspected communists and anarchists arrested and held without trial in several U.S. cities.
- The United States Senate votes for joining the League of Nations.
- The League of Women Voters is founded in Chicago.
Historical Highlights from 1920