Daniel Greysolon, the Sieur Du Luth, attaches the coat of arms of King Louis XIV to a tree on the shore of Mille Lacs, intending to claim the land for France.

The Raptor Center at the University of Minnesota opens. The facility treats injured birds of prey and helps to rehabilitate them for release into the wild.

The Interstate Bridge in Stillwater opens, replacing a wooden one built in 1876.

A nationwide walkout by railroad shop craft and other employees includes 8,000 workers in the Twin Cities. The strike ends in defeat for the workers, with scab labor permanently replacing many of them, but the new Farmer-Labor Party's assistance during the strike encourages the workers' support of the party in later elections, making the Farmer-Labor Party, rather than the Democratic Party, the principal opposition party in Minnesota.

Heiress Elizabeth Congdon and her nurse are murdered at Glensheen mansion in Duluth. In a sensational trial, Congdon's son-in-law, Roger Caldwell, is convicted of the murders. New evidence in the case sets him free a year later but incriminates his wife, Marjorie. Acquitted of these murders but found guilty in two arson cases, Marjorie is sentenced to serve time in an Arizona prison.

John S. and Charles A. Pillsbury buy a third interest in the Frazee and Murphy Flour Mill. The Pillsbury Company marks this date as its birthday.

Duluth's Ed Hommer is the first double amputee to reach the top of Mount McKinley (20,320 feet). He had lost his legs to frostbite after a plane crash on the mountain in 1981.

Soviet President Mikhail Gorbachev spends a few hours in the Twin Cities.

Logs driven by floodwaters knock down the second and third bridges built over the Mississippi River, in Minneapolis. The first, the Father Louis Hennepin Suspension Bridge, remains standing.

Charles Nathaniel Hewitt is born in Vermont. He led the state legislature to create the state board of health in 1872, making Minnesota the third state to do so. Dr. Hewitt died in 1910.