S. Edward Hall was a prominent African American barber and advocate for the African American community, both in St. Paul and nationally. An active Republican, Hall was a four-time state presidential elector and a member of several political committees and social organizations. His work for his community and success as a businessman are important components of the history of African Americans in St. Paul and, specifically, the Rondo neighborhood.

The Nerstrand City Hall, built in 1908, is one of Rice County’s most architecturally significant municipal buildings. Since its construction, the structure has been integral to the community's affairs. In 1982, it was placed on the National Register of Historic Places.

When the fourth state hospital for the insane at Anoka opened in 1900, it became the first state transfer hospital for patients considered incurably insane. The hospital was the first in Minnesota to be built according to the cottage plan to reduce the institutional feel for its chronic patients. It remains one of the finest examples of the cottage plan in Minnesota.

In 1890, Adam Roth and his son, William E., established a butcher business in Nerstrand (Rice County) that grew to specialize in smoked and grilled meats—particularly bologna and wieners. In 2019 the family-owned enterprise, Nerstrand Meats and Catering, celebrated 129 years of continuous operation.

Originally built in 1892, the Ramsey School House served Anoka County’s School District #28 until the mid-twentieth century, when the schools in the county were consolidated. The building was then repurposed as the Ramsey Town Hall.

The history of law enforcement in the Twin Cities, as in the rest of the United States, has been deeply influenced by race. Since the early twentieth century, many Minnesotans of color have responded to racial targeting and police brutality by forming community organizations and citizen patrols; others have served as officers themselves and grappled with racial inequality inside the police force.

Camp Rabideau is a Civilian Conservation Corps (CCC) site established as part of the “New Deal” in 1933 to help alleviate unemployment during the Depression. Located in Beltrami County, it operated until 1942. It later became a satellite campus for University of Illinois forestry and engineering students; a Native American learning center; and an educational center for Chippewa National Forest visitors.

Begun in 1918 and active until the late 1970s, the Barberry Eradication Program was an unprecedented cooperative effort between the US Department of Agriculture and twelve US states to remove the invasive common barberry bush from major areas of wheat production in the United States. The common barberry bush was a problem because it is a secondary host for the fungus that causes stem-rust disease, the most devastating disease of wheat. Minnesota played the central role in the establishment and operations of the eradication program.

Ernest Oberholtzer first paddled the lakes of the Rainy Lake watershed in 1909. Starting in the 1920s, he lived on Rainy Lake’s Mallard Island and was a prominent conservationist. He led the campaign for legislation to protect the watershed, including parts of what would become Voyagerus National Park and the Boundary Waters Canoe Area Wilderness.

Designed by noted architect Frederick Marsh, this seventeen-room Georgian Revival-style home, built in Anoka in 1904, received the name “Colonial Hall” courtesy of its original residents, the doctors Alanson and Flora Aldrich.