1. On April 7, 1842, the first recorded game of baseball was played in Wisconsin. The game was played between two teams of soldiers stationed at Fort Howard in Green Bay.

2. Wisconsin was admitted to the Union as the 30th state on April 7, 1848. It was the first state formed from the territory acquired by the United States in the Northwest Ordinance.

3. On April 7, 1922, the village of Lake Delton was incorporated in Sauk County. The town is known for its Lake Delton Waterpark, which attracts thousands of tourists each year.

4. April 7, 1977, is a significant date in Wisconsin history as it marked the first time a woman was elected to the State Assembly. Mary Lou Munts, a Democrat, won a special election in the 79th Assembly District.

5. In 2002, Governor Scott McCallum declared April 7 as "Wisconsin Entrepreneurship Day" to celebrate the role of entrepreneurs in the state's economy. The day recognizes the contributions of small business owners and encourages the development of new businesses and innovation.