1. On May 12, 1926, the Michigan State Highway Department announced the creation of the M-1 highway, which would eventually become known as Woodward Avenue. The roadway, which stretches over 27 miles, is a major thoroughfare in the Detroit metro area and is known for its historic significance and cultural impact.

2. In 1954, the University of Michigan announced that it had developed a new vaccine for polio, which was one of the deadliest diseases in the world at the time. The vaccine, developed by virologist Thomas Francis Jr., went on to save countless lives and marked a major breakthrough in medical science.

3. On May 12, 1990, the Michigan Wolverines men's lacrosse team defeated the Ohio State Buckeyes to win the conference championship. It was the team's first conference title since 1975 and marked a major milestone in the program's history.

4. In 1984, the Michigan Historical Commission designated the Edsel and Eleanor Ford House in Grosse Pointe Shores, Michigan, as a state historic site. The sprawling estate, which was built in the 1920s, is now open for tours and is considered one of the most significant historic properties in the state.

5. On May 12, 1891, the Michigan State Capitol building officially opened its doors to the public. The impressive structure, which features a cast iron dome and stunning architectural details, remains an important symbol of Michigan's political history and legacy.