1. Flag Day: June 14 is celebrated as Flag Day in the United States as it commemorates the adoption of the flag of the United States by the Continental Congress in 1777. Ohio has a unique connection to Flag Day as it is believed that the first official Flag Day parade was held in Fairfield, Ohio on June 14, 1861.

2. Ohio's state flag: Ohio's current state flag was adopted on July 10, 1902, but its design was originally created in 1865 by John Eisenmann and George Washington Smith. The flag features a white circle with a red border containing Ohio's state coat of arms and crossed red and white stripes on a blue field.

3. The Ohio Constitution: The Ohio Constitution was adopted on June 14, 1851. It replaced the original Ohio Constitution of 1802 and has been amended many times since then. The current Ohio Constitution contains over 20,000 words and is divided into 18 articles.

4. The first American automobile race: On June 14, 1895, the first American automobile race was held in Chicago, but many of the participants were from Ohio. The race covered a distance of 54 miles and was won by Frank Duryea, who was driving a vehicle he and his brother had built.

5. Birthplace of Superman: Superman, one of the most iconic fictional superheroes of all time, was created by Jerry Siegel and Joe Shuster. Siegel was born on June 14, 1914 in Cleveland, Ohio, and it was in Cleveland where Siegel and Shuster created the character of Superman in the 1930s. Today, Superman is a cultural icon who has become synonymous with Ohio's rich comic book history.