1. June 12, 1912: Buckeye Steel Castings Company is founded in Columbus, Ohio. The company would go on to become one of the largest producers of steel castings in the world, supplying components to industries ranging from automotive manufacturing to aerospace.

2. June 12, 1924: The Ohio state flag is officially adopted. The flag features a distinctive red, white, and blue design with a broad pennant on the left-hand side. The red and white stripes represent Ohio's roads and waterways, while the blue triangle symbolizes the state's hills and valleys.

3. June 12, 1953: The Cleveland Indians set an American League record by scoring 12 runs in a single inning against the Boston Red Sox. The "Big Inning," as it came to be known, featured 8 hits and 5 walks, and helped the Indians to a 13-5 victory.

4. June 12, 1963: NAACP leader Medgar Evers is assassinated outside his home in Jackson, Mississippi. Evers had spent time in Ohio during his career, working as field secretary for the NAACP in the state in the mid-1950s.

5. June 12, 2016: A gunman opens fire at an LGBT nightclub in Orlando, Florida, killing 49 people and injuring dozens more. The shooting sparked renewed debate about gun control and LGBT rights, and led to memorial services and vigils being held across Ohio and the United States.