1. On April 7, 1941, the Battle Creek Sanitarium was destroyed in a fire. The sanitarium was founded by Dr. John Harvey Kellogg and was a world-famous health resort that attracted thousands of guests every year.

2. The Detroit Tigers played their first game at Tiger Stadium on April 7, 1912. The stadium was home to the Tigers for over 80 years and was the site of many historic moments in baseball history.

3. On April 7, 1933, Michigan Governor William A. Comstock declared a state of emergency in response to the Great Depression. The state's unemployment rate was over 25 percent, and the emergency declaration allowed the governor to take action to address the crisis.

4. Michigan State University was founded on April 7, 1855, as the Agricultural College of the State of Michigan. Today, it is one of the largest universities in the country and is known for its strong programs in agriculture, engineering, and business.

5. The Mackinac Bridge, which connects the Upper and Lower Peninsulas of Michigan, opened to traffic on April 7, 1957. The bridge is one of the longest suspension bridges in the world and is a beloved symbol of the state of Michigan.