1. On February 1, 1902, the first State Capitol building in Madison, Wisconsin burned down. The fire started in the basement and quickly spread, destroying the entire building. However, most of the state's important documents and artifacts were saved.

2. February 1, 1943, is known as "Sunkist Day" in Wisconsin, as it was the day that the Sunkist Growers cooperative was officially recognized by the state. Sunkist is a citrus cooperative that was formed in 1893 in California, but has members throughout the United States and other parts of the world.

3. The University of Wisconsin-Madison celebrated its 100th anniversary on February 1, 1949. The university was founded in 1848 and has since become one of the top public universities in the United States. It has produced many successful alumni, including several Nobel Prize winners.

4. February 1, 1952, was a significant day for Wisconsin's dairy industry. The state's first modern dairy plant opened in Plymouth, Wisconsin. The facility was capable of processing up to 25,000 pounds of milk per hour and was a major advancement for the state's dairy industry.

5. February 1, 2004, was the day that Janet Reno, the first female Attorney General in the United States, spoke at the University of Wisconsin-Madison. Reno was an important figure in Wisconsin history, as she oversaw the investigation into the Waco siege in 1993, which resulted in the deaths of 76 people.