1. On May 6, 1882, the first post office was established in the city of Neenah, Wisconsin. Neenah is now known for its paper industry and as the home of the Kimberly-Clark Corporation, which produces brands such as Kleenex and Huggies.

2. In 1941, the Allis-Chalmers Manufacturing Company in Milwaukee produced its first M4 Sherman tank for the United States Army. Allis-Chalmers went on to produce over 10,000 tanks during World War II, playing a crucial role in the Allied victory.

3. May 6, 1977, marks the first female mayor elected in Milwaukee's history. Vel Phillips became the 31st mayor and the first black women to hold this office in a major American city.

4. The University of Wisconsin-Whitewater was founded on May 6, 1868. Today, the university offers over 50 undergraduate majors, 15 graduate programs, and is known for its strong business and education programs.

5. On May 6, 2000, the historic Riverside Theater in downtown Milwaukee officially reopened after a $22 million renovation. First opened in 1928, the theater has hosted countless performances and celebrities over the years, including Elvis Presley, Frank Sinatra, and Bob Dylan.