- 1906 – Chester Carlson born, American physicist and inventor of Xerography
- 1910 – The Boy Scouts of America is incorporated by William D. Boyce.
- 1922 – President Warren G. Harding introduces the first radio in the White House.
- 1960 – The first eight brass star plaques are installed in the Hollywood Walk of Fame.
- 1963 – Travel, financial and commercial transactions by United States citizens to Cuba are made illegal by the John F. Kennedy administration.
- 1971 – The NASDAQ stock market index opens for the first time.
- 1996 – The U.S. Congress passes the Communications Decency Act.
- 1996 – The massive Internet collaboration “24 Hours in Cyberspace” takes place.