1. In 1917, the Cleveland Indians won their first World Series title. Led by player-manager Tris Speaker, the Indians defeated the New York Giants in a five-game series. This was the first and only World Series title for the Indians until 1948.

2. On October 15, 1951, the Ohio Turnpike opened to traffic. The 241-mile toll road connects the Ohio-Indiana border near Toledo to the Ohio-Pennsylvania border near Youngstown. The turnpike was constructed to provide a faster and safer east-west route through Ohio.

3. The Ohio State University's marching band, the "Best Damn Band in the Land," was founded on October 15, 1878. The band is known for its elaborate halftime shows and intricate formations, and has performed at numerous high-profile events, including the Rose Bowl and the Macy's Thanksgiving Day Parade.

4. In 1935, the Cincinnati Reds won their second World Series title. Led by future Hall of Famers Ernie Lombardi and Paul Derringer, the Reds defeated the Detroit Tigers in a seven-game series. This was the first World Series title for the Reds in 21 years.

5. On October 15, 1904, Wilbur Wright made the first circular flight in a powered aircraft. The flight took place in Huffman Prairie, near Dayton, and lasted for over five minutes. This was a significant milestone in the development of aviation, as it demonstrated the maneuverability of the Wright Flyer.