1. The 1951 Minnesota State Fair set a new attendance record on June 30 with over 161,000 attendees in a single day.

2. On June 30, 1962, the city of Saint Paul dedicated its new $1.5 million ballpark, named Midway Stadium, which served as the home field for the Saint Paul Saints minor league baseball team until 2014.

3. In 1845, the Treaty of Mendota was signed between the United States government and several Dakota Indian tribes, ceding millions of acres of land to the US in exchange for annual annuities and provisions.

4. June 30, 1954, marks the date the University of Minnesota's $10 million expansion plan was announced, including the construction of new schools of agriculture, forestry, home economics, and veterinary medicine.

5. On June 30, 1984, Prince's unforgettable "Purple Rain" album was released under the Warner Bros. label. The album sold over 25 million copies worldwide and became Prince's best-selling album, featuring classic hits such as "When Doves Cry," "Let's Go Crazy," and the title track "Purple Rain."