Frances Andrews worked as an advocate for social justice, education, and conservation in the early twentieth century. She called for preservation of the forests and lakes that became the Boundary Waters Canoe Area Wilderness and experimented with land restoration in northwestern Wisconsin. Her legacy includes an endowment that continues to support social and environmental causes in the 2010s.

On October 30, 1991, no one in Minnesota foresaw a blizzard. Local meteorologists predicted a few inches of snow. The snow began to fall in the early to mid-afternoon of October 31—Halloween Day— and fell steadily for almost three days. When it stopped, snow measured over thirty inches in the eastern part of Minnesota, from Duluth to Dodge Center, breaking a record set in 1882.

In 1959, a new orchestra was formed in St. Paul in order to attract more people to downtown. The St. Paul Chamber Orchestra (SPCO) held their first concert on November 18, 1959, in the Central High School auditorium. Since their debut, the SPCO has won several awards and has become the only full-time chamber orchestra in the United States.

From ancient times to the present, a pipestone quarry in southwestern Minnesota has been a sacred gathering place for Native nations from all over North America. Modern highways following traditional migration routes used by indigenous people intersect at this venerated place, designated a national monument in 1937. Dakota people called it―and still call it―Inyan Sa K'api, [the place where] they dig the red stone.

From 1900–1915, the girls’ preparatory school Graham Hall catered to well-to-do Minneapolis families with an elite pre-college curriculum. The school also offered a general course of study and elementary education. Graham Hall was eventually reincorporated under a board of trustees as the Northrop Collegiate School, which, in turn, became a part of the Blake School.

The first murder to reach the courts of what would become Minnesota took place during the early infancy of St. Paul, in the late summer of 1839. Though both victim and main suspect were quickly identified, the case was never solved.

The Great Northern Railway was a transcontinental railroad system that extended from St. Paul to Seattle. Among the transcontinental railroads, it was the only one that used no public funding and only a few land grants. As the northernmost of these lines, the railroad spurred immigration and the development of lands along the route, especially in Minnesota.

When Jack Baker and Michael McConnell became the first same-sex couple in the United States to apply for a marriage license, in 1970, Hennepin County clerk Gerald R. Nelson rejected their application. They then sued Nelson, claiming a constitutional right to marry in what would become a landmark Supreme Court Case.

Blue Mounds State Park, named for a long, high Sioux quartzite cliff, is located in southwestern Minnesota on the Iowa and South Dakota borders. The cliff, one and one-half miles long and up to ninety feet high, appeared to be blue in color to the early Euro-American immigrants who saw it from a distance. A unique herd of bison, the largest North American mammal, makes its home in the park on 533 acres of native tall grass prairie, which escaped plowing due to poor soil quality.