The cover of Runes of the North, written by Sigurd Olson, illustrated by Robert Hines, and published by Alfred A. Knopf in 1963.

Sigurd Olson, Tom Savage, and Russell Fridley (left to right) meet at the confluence of the Minnesota and Mississippi Rivers (Bdote) to survey the recently created Fort Snelling State Park.

Sigurd F. Olson, ca. 1960. Photograph by Eugene D. Becker.

Sigurd F. Olson, 1959.

Sigurd F. Olson, ca. 1949.

First mine on the Mesabi Range, near Mountain Iron, ca. 1892.

The Hull-Rust-Mahoning mine in Hibbing, Minnesota, is the largest open-pit iron mine in Minnesota. As of 2020, material is still mined from the complex by Hibbing Taconite, or HibTac. Photograph by Wikimedia Commons user Chipcity, August 7, 2010. CC BY-SA 3.0.

Map showing where ginseng is found within the state. The data were gathered from the records of the Bell Museum Herbarium.

Clipping from the St. Paul Weekly newspaper, June 11, 1859. The article mentions the number of people who have moved to “around Northfield” to dig ginseng. It also mentions that “At Faribault sales amount to five or six tons per week.”