1. On May 16, 1844, the Whig Party held a convention in Columbus, Ohio to nominate their candidate for the upcoming presidential election. They ultimately nominated Henry Clay, who would go on to lose to Democrat James K. Polk.

2. In 1920, Ohio became the 6th state to ratify the 19th Amendment to the U.S. Constitution, which gave women the right to vote. This historic moment paved the way for women's suffrage across the country.

3. On May 16, 1952, the Ohio Department of Natural Resources was established by the state legislature. Its mission is to protect and manage Ohio's natural resources, including parks, forests, wildlife, and waterways.

4. On this day in 1966, the Cleveland Cavaliers were awarded an NBA expansion franchise, becoming the first professional basketball team in Ohio. The team played its first game in October of that year.

5. In 1996, a family in Bath Township, Ohio discovered a series of underground tunnels on their property. The tunnels, which were believed to be used by bootleggers during Prohibition, became a source of fascination for locals and historians alike.