1. Wisconsin becomes a state: On August 19, 1848, President James K. Polk signed the Wisconsin statehood bill, officially making Wisconsin the 30th state in the Union.

2. Redlining in Milwaukee: On August 19, 1960, the National Association of Real Estate Boards published a map of Milwaukee that marked neighborhoods in red zones, indicating them as high-risk areas for loans. This was a form of redlining, which discriminated against predominantly Black and Latinx neighborhoods.

3. The Wisconsin State Capitol fire: On August 19, 1904, the Wisconsin State Capitol caught fire and several of its floors were destroyed. The building was later rebuilt and remains an iconic attraction in Madison.

4. Sputnik launch celebrated: On August 19, 1958, the Wisconsin House of Representatives passed a resolution commemorating the first anniversary of the launch of the Soviet satellite Sputnik, which sparked the Space Race between the Soviet Union and the United States.

5. Green Bay Packers founder passes away: On August 19, 1947, Curly Lambeau, founder and first coach of the Green Bay Packers, passed away in Sturgeon Bay, Wisconsin. He is remembered as a key figure in the history of the Packers and the National Football League.