1. The Buckeye State's First Grange: On February 7, 1873, the first Grange in Ohio was founded in Washington County. The Grange was a fraternal organization that advocated for the rights and interests of farmers and rural communities.

2. Ohio's First Female Mayor: In 1917, Mabel Walker Willebrandt became the first female mayor in the state of Ohio. She was elected as the mayor of East Liverpool and went on to serve as the first female assistant attorney general of the United States.

3. The Dayton Flood: On February 7, 1913, heavy rains in Dayton, Ohio, caused the Great Dayton Flood. The flood was one of the worst natural disasters in Ohio's history, with over 400 people losing their lives and thousands left homeless.

4. Harding's Ohio Roots: In 1923, Warren G. Harding became the 29th president of the United States. He was born and raised in Ohio, where he also served as the state's lieutenant governor and senator before his presidency.

5. Ohio's First Super Bowl Win: On February 7, 2016, the Cleveland Browns made history by winning their first Super Bowl in franchise history. The Browns defeated the Minnesota Vikings in Super Bowl L, with a final score of 30-27.