1. In 1800, Kentucky became the 15th state in the United States. It was the first state west of the Appalachian Mountains to be admitted to the Union.

2. On June 3, 1861, the first land battle of the Civil War was fought at Philippi, West Virginia. Although not technically in Kentucky, this battle had an impact on the state as it led to a tightening of security along the border to prevent Confederate troops from infiltrating.

3. On June 3, 1871, Louisville celebrated the opening of its grand new opera house, The Louisville Theatre. The 3,500-seat venue was one of the largest theaters in the country at the time and hosted many famous performers.

4. In 1922, the first Kentucky Derby held after World War I took place on June 3. The race had been suspended during the war and was eagerly anticipated by racing fans. The winner was Morvich, ridden by jockey Albert Johnson.

5. On June 3, 1957, Louisville native Muhammad Ali (then known as Cassius Clay) won the National Golden Gloves boxing tournament. At the time, he was only 15 years old and the youngest fighter to win the tournament. This win helped launch his legendary boxing career.