1. Treaty of Mendota was signed on May 7, 1851, which established the boundaries of the Dakota Reservation and ceded millions of acres of land to the US government, opening them up for settlement.

2. The iconic sculpture, Spoonbridge and Cherry, was officially opened to the public in the Walker Art Center's Sculpture Garden on May 7, 1988. The sculpture has become a beloved symbol of Minneapolis and its art scene.

3. KSTP-TV, the first commercial television station in Minnesota, began broadcasting on May 7, 1948. It was initially a part of the radio station, but eventually became its own entity and continues to operate today.

4. Minnesota Twins' baseball legend, Harmon Killebrew, hit his 500th home run on May 7, 1967, becoming the 10th player in Major League Baseball history to reach the milestone. Killebrew's impressive career continued with his induction into the Baseball Hall of Fame in 1984.

5. On May 7, 1954, the Supreme Court of Minnesota ruled in a landmark case that the state could no longer segregate its schools based on race. The decision was a precursor to the Brown v. Board of Education ruling from the US Supreme Court, which declared segregation in public schools unconstitutional.