1. In 1864, the Battle of Ezra Church took place during the American Civil War. Wisconsin troops played a significant role in this battle, which was part of the Atlanta Campaign.

2. On July 30, 1908, a tornado struck the city of Racine, causing significant damage and killing 11 people. This tornado is still one of the deadliest in Wisconsin history.

3. In 1928, the Wisconsin State Journal reported on the first recorded shark attack in the state's history. A 12-year-old boy was bitten by a shark while swimming in Lake Michigan near Sheboygan.

4. July 30, 1939, marked the dedication of the Wisconsin Memorial Arch in downtown Milwaukee. The arch commemorates the state's soldiers who fought in the Spanish-American War, World War I, and the Mexican Border Campaign.

5. On July 30, 1997, the city of Green Bay hosted the opening ceremony for the first World Dwarf Games. The games brought together athletes with dwarfism from around the world to compete in various sports.