The state of Minnesota and the Ojibwe living near Crow Wing sign a peace treaty. Negotiated to alleviate settler-colonists' fears that the Ojibwe would join in the US–Dakota War, in truth the agreement was void because the state did not have the power to make treaties.

St. Peters Indian Agent Lawrence Taliaferro suspends the license of fur trader Alexis Bailly. An employee of the American Fur Company, Bailly had broken trade rules, including those forbidding the sale of liquor. Bailly's replacement, Henry H. Sibley, played a major role in Minnesota history.

Alexander Henry II arrives at the Pembina River to begin his trading business.

The first Northshore Inline Marathon is held in Duluth. Inline skates, or rollerblades, are a Minnesota creation: Scott and Brennan Olson designed them so hockey players could practice when there was no ice.

Newspaper editor Horace Greeley gives the principal address at a Hennepin County agricultural fair held in Minneapolis. In his speech he advocates federal and state regulations for the protection of farmers.

Commercial production of taconite at the Reserve Mining Company's plant in Silver Bay begins. Taconite had been developed in 1919, in Babbitt, but large-scale production wasn't begun until Edward W. Davis had perfected a method to process it and the richer parts of the iron ranges had been mined out.

Duluth's municipal airport is dedicated and a crowd of 15,000 attends the ceremony and air show.

Theodore Christianson is born in Lac qui Parle Township. From 1925 to 1931 he served as Minnesota's twenty-first governor––the second one to be born in the state. He also wrote a five-volume history of Minnesota. He died on December 10, 1948.

Joseph R. Brown arrives at the site of Henderson, which he would name for his mother's family. Brown had been involved in various ventures, serving as a soldier, explorer, farmer, lumberman, legislator, and Indian agent in the early years of the territory.

Governor Jesse "The Body" Ventura returns to his roots, refereeing a professional wrestling match at Target Center in Minneapolis.