1. In 1863, Ohio became the first state to officially commemorate Memorial Day as a holiday. The tradition began in the small town of Waterloo, Ohio, where a group of women organized a ceremony to honor fallen soldiers who had died in the Civil War.

2. On May 21, 1932, Amelia Earhart, the famous aviator and Ohio native, became the first woman to fly solo across the Atlantic Ocean. She departed from Newfoundland and landed in Northern Ireland after nearly 15 hours in the air.

3. The deadliest tornado in Ohio history occurred on May 21, 1896, when an outbreak of tornadoes swept across the state. The storm killed 78 people and injured hundreds more, leaving a 50-mile path of destruction in its wake.

4. On May 21, 1914, the first Rock and Roll song was recorded in Ohio. The song, "That's All Right," was recorded by white guitarist and entertainer, Ralph Peer, in a temporary studio set up in a Memphis warehouse.

5. One of the most significant legal decisions in Ohio history was made on May 21, 1951, when the U.S. Supreme Court ruled in the landmark case of Sweatt v. Painter that separate but equal educational facilities were inherently unequal. The case paved the way for desegregation in Ohio and throughout the country.