1. On June 13, 1792, Kentucky became the 15th state to join the Union. The Commonwealth of Kentucky was formed from the western part of Virginia and the vote to approve statehood took place on June 1, 1792.

2. In 1865, Ebenezer Coburn of Bowling Green, Kentucky, filed a patent for the first plow that could be operated while riding on a horse. The plow was called the "riding attachment" and allowed farmers to plow their fields faster and more efficiently.

3. On June 13, 1902, Alben W. Barkley, who would later become Vice President of the United States, graduated from Marvin College (now known as Paducah Tilghman High School) in Paducah, Kentucky. Barkley also served as a U.S. Senator from Kentucky from 1927 to 1949.

4. In 1944, during World War II, a train derailment in Louisville, Kentucky resulted in a massive explosion that killed 32 people and injured over 400. The explosion was caused by a chemical reaction between two tanker cars carrying butadiene and propane.

5. On June 13, 1956, the Kentucky Governor's Cup horse race was first run at Churchill Downs in Louisville, Kentucky. The race is now known as the Stephen Foster Handicap and is a Grade II race for horses three years and older. The purse for the race is currently $600,000.