Soren Kierkegaard 1813 - Philosopher, poet, theologian
- 1809 - Mary Kies was awarded the first patent to go to a woman. It was for technique for weaving straw with silk and thread.
- 1862 - The Battle of Puebla took place. It is celebrated as Cinco de Mayo Day.
- 1865 - The Thirteenth Amendment was ratified, abolishing slavery in the U.S.
- 1892 - The U.S. Congress extended the Geary Chinese Exclusion Act for 10 more years. The act required Chinese in the U.S. to be registered or face deportation.
- 1945 - A Japanese balloon bomb exploded on Gearhart Mountain in Oregon. A pregnant woman and five children were killed.
- 1961 - Astronaut Alan B. Shepard Jr., aboard Mercury capsule Freedom 7, became the first American in space when he made a 15 minute suborbital flight.