1) On August 12, 1862, the Battle of Lone Jack took place in Missouri during the American Civil War. This battle was significant for Minnesota as it involved several companies of Minnesota soldiers sent to help quell the rebellion.

2) In 1926, a race riot broke out in Duluth, Minnesota on August 12. This tragic event saw three African-American men lynched and several others assaulted by a mob of white residents.

3) August 12, 1986 saw the dedication of the Hubert H. Humphrey Metrodome in Minneapolis. The stadium served as the home of the Minnesota Vikings and Minnesota Twins for several decades before being replaced by U.S. Bank Stadium.

4) On this day in 1898, Minnesota Governor John Lind issued a proclamation calling for an emergency session of the state legislature to address a severe drought that was affecting farmers throughout the state.

5) Finally, August 12, 2015 marked the 10th anniversary of the collapse of the I-35W bridge in Minneapolis. The tragic event claimed 13 lives and injured 145 others, and led to major changes in bridge inspection and maintenance policies both in Minnesota and nationwide.