1. The first streetcar line in Wisconsin opened in Milwaukee on May 22, 1890. The line ran between the Milwaukee and Wauwatosa city limits, and helped to fuel the growth of both cities.

2. On May 22, 1856, Wisconsin senator Charles Sumner was brutally beaten with a cane on the floor of the U.S. Senate by Representative Preston Brooks of South Carolina. The attack was sparked by Sumner's criticism of slavery and his verbal attacks on Brooks' uncle.

3. On May 22, 1992, a tragic gas explosion occurred at a dairy farm in Jefferson County, killing three members of the family that owned the farm. The explosion was caused by a leak in a propane tank that had been installed only a few days earlier.

4. On May 22, 1892, the Wisconsin Central Railroad completed construction of its line connecting Chicago and Minneapolis/St. Paul. The line helped to spur economic growth in many of the communities it passed through, and remained an important transportation link until the 1970s.

5. The Milwaukee Braves played their first game at County Stadium on May 22, 1953. The team, which had relocated from Boston, would go on to win the National League pennant that year and bring a period of baseball glory to the city of Milwaukee.