1. In 1853, the first railroad in Wisconsin, the Milwaukee & Mississippi Railroad, began operation between Milwaukee and Wauwatosa.

2. On September 7, 1915, the Green Bay Packers played their first football game as an independent team, defeating a team from Menominee, Michigan, by a score of 53-0.

3. In 1935, the Milwaukee County Zoo opened to the public on September 7. It is now home to over 2,000 animals and is one of the top attractions in Wisconsin.

4. On September 7, 1943, the U.S. Navy commissioned the USS Wisconsin, a battleship named after the state, which saw action in World War II, the Korean War, and the Gulf War.

5. In 1962, the Great Lakes Naval Training Center in Illinois was renamed in honor of Wisconsin-born naval hero, Rear Admiral James A. Lovell Jr. Lovell would later become famous as the commander of the ill-fated Apollo 13 mission in 1970.