1. On October 5, 1851, the Treaty of Traverse des Sioux was ratified between the United States and the Dakota Nation. The treaty ceded millions of acres of land in Minnesota to the U.S., leading to the forced removal and displacement of thousands of Native American people.

2. The Minnesota Twins played their first postseason game on October 5, 1969, against the Baltimore Orioles in the American League Championship Series. The Twins lost the series in three games, but it was the first of many postseason appearances for the team.

3. On October 5, 1924, the first woman was elected to the Minnesota State Legislature. Clara Ueland, a Republican from St. Paul, served in the House of Representatives and advocated for women's suffrage and child welfare.

4. The infamous "Minnesota Iceman" was allegedly seen by several people at the State Fair on October 5, 1968. The Iceman was a supposed Bigfoot-like creature frozen in a block of ice that was toured around the country as a sideshow attraction. The authenticity of the Iceman has been widely debated and remains a mystery.

5. The first school for the deaf in Minnesota, the Minnesota State School for the Deaf, opened its doors on October 5, 1863, in Faribault. The school provided education and support for deaf and hard-of-hearing students for over 150 years before closing in 2020.