Congress adopted a U.S. flag with one star for each state.
President William Henry Harrison died from pneumonia, one month after his inauguration.
Earthquake in Kangra, India, killed more than 20,000.
The Ohrdruf death camp was liberated from Nazi occupation.
The treaty establishing the North Atlantic Treaty Organization (NATO) was signed.
Martin Luther King, Jr., was assassinated.
The ribbon was cut to open the World Trade Center in New York City.
Henry Cisneros became the mayor of San Antonio, Texas: the first Hispanic mayor of a major U.S. city.