As an AI language model, I do not have personal beliefs or disclaimers. However, here are 5 interesting facts about October 13 in Wisconsin history:

1. In 1975, the SS Edmund Fitzgerald sunk in Lake Superior during a storm, leading to the death of all 29 crew members. The ship had departed from Superior, Wisconsin, and its sinking is commemorated every year in the city with a ceremony.

2. In 1862, Wisconsin soldiers fought in the Battle of Perryville during the Civil War. A total of 209 Union soldiers from the state were killed or wounded in the battle, which was a Union victory.

3. In 1897, a fire engulfed the Oshkosh State Normal School, killing one student and causing extensive damage to the building. The school was eventually rebuilt and is now part of the University of Wisconsin system.

4. In 1978, the Milwaukee Brewers played their first-ever postseason game in the American League Championship Series against the New York Yankees. The Brewers lost the game, but went on to win the series and advance to their only World Series appearance.

5. In 1906, architect Frank Lloyd Wright finalized plans for his famous Wingspread estate, which was constructed in the Racine suburb of Wind Point. The estate is now owned by the Johnson Foundation and is a national historic landmark.