1. The Jackson County Courthouse in Brownstown was dedicated on October 31, 1876. The building is still standing and is listed on the National Register of Historic Places.

2. On October 31, 1920, the infamous Ku Klux Klan held a rally in downtown Evansville, Indiana. It is estimated that between 5,000 and 8,000 Klansmen were in attendance, making it one of the largest Klan rallies in history.

3. In 1979, Indiana University basketball player Larry Bird made his debut for the Boston Celtics on October 31. Bird would go on to become one of the greatest players in NBA history and is widely regarded as the greatest basketball player ever to come out of Indiana.

4. The town of Portland, Indiana, celebrates its annual "Pumpkin Festival" on the last weekend of October, which often includes October 31. The festival includes a massive pumpkin weigh-in, a pumpkin parade, and numerous other activities.

5. On October 31, 1820, the Battle of Tippecanoe took place near present-day Battle Ground, Indiana. The battle was fought between American forces led by Governor William Henry Harrison and Native American warriors led by Tecumseh. The battle resulted in a victory for the Americans and is considered a turning point in the ongoing conflict between white settlers and Native Americans in the Midwest.