1. Wisconsin State Fair: September 24, 1851, marks the day when the first Wisconsin State Fair was held in Janesville, Rock County. The fair was later moved to Wisconsin's capital, Madison, where it now takes place annually at the Alliant Energy Center.

2. Ed Gein's Arrest: On September 24, 1957, Ed Gein was arrested in Plainfield, Wisconsin, after police discovered evidence of murder and grave-robbing at his farm. Gein would later be convicted of the murder of two women and his story would inspire numerous horror movies and books, including "Psycho" and "The Texas Chainsaw Massacre."

3. Constitution Day: September 24 is celebrated as Constitution Day in Wisconsin. On this day, in 1847, a constitutional convention was held in Madison to draft a new constitution for the state of Wisconsin.

4. Governor's Mansion: On September 24, 1920, the Wisconsin governor's mansion was completed in Madison. The historic residence, known as the Executive Residence, is located in a neighborhood of the city known as "Mansion Hill."

5. Green Bay Packers: On September 24, 1933, the Green Bay Packers played their first NFL game against the Chicago Bears. The game was held at Wrigley Field in Chicago, and the Packers lost to the Bears with a final score of 23-0. The Packers have since become a legendary team in Wisconsin and the NFL, winning multiple Super Bowls and maintaining a devoted fan base.