1. On September 17, 1859, the first public school in Superior, Wisconsin was opened. It had only one teacher and a handful of students, but it marked an important step in the development of education in the region.

2. September 17, 1922 was the day the University of Wisconsin's Memorial Union building was dedicated. The building remains a popular gathering place for students and locals alike, and has been the site of many historic events over the years.

3. On September 17, 1969, a major fire swept through the town of Peshtigo, Wisconsin, killing more than 1,500 people and leaving thousands homeless. The disaster remains one of the deadliest wildfires in American history.

4. September 17, 1933 was the day that the Green Bay Packers played their first game at Lambeau Field. The team has since gone on to become one of the most successful in the NFL, with numerous championship titles to their name.

5. Finally, on September 17, 1862, the Battle of Antietam took place in Maryland, which had significant repercussions for the Wisconsin troops who fought there. Although it was one of the bloodiest battles of the Civil War, it also helped turn the tide of the conflict in favor of the Union Army.