1. In 1810, the first known performance of a circus in Kentucky took place in Lexington. It included acrobatic acts, horse riding, and other forms of entertainment.

2. In 1862, the Battle of Mill Springs, also known as the Battle of Fishing Creek, was fought in Pulaski and Wayne counties. It was the first significant Union victory in the western theater of the American Civil War.

3. In 1904, a train carrying the Harris Nickel Plate Show, a traveling circus, derailed near Paris. Several animals were killed, but no humans were injured.

4. In 1938, the Great Flood of 1937 reached its peak in Louisville, with the Ohio River cresting at a record 57.1 feet. Thousands of people were displaced and vast areas of the city were submerged.

5. In 1968, Louisville native Cassius Clay, who had changed his name to Muhammad Ali, defeated Ernie Terrell in a controversial boxing match that was overshadowed by Ali's taunts and refusal to refer to Terrell by his chosen name.