Unedited KSTP-TV footage of the Tower-Soudan iron mine in 1979, including interior and exterior views and shots of the Engine House, elevator shaft, mine workers and mine visitors.

The one million acres of land and water bordering Minnesota and Canada called the Boundary Waters Canoe Area, or BWCA, began to be set aside for preservation purposes in 1902. MN90 producer Marisa Helms recounts some of its history.

Northrup King Dahlia seed packet, 1986.

Northrup King seed bag for Grimm alfalfa, c.1956. Grimm alfalfa was the first winter-hardy alfalfa in North America.

Bags of Northrup, King and Company lawn seeds, February 14, 1935. Photographer: Norton and Peel.

Northrup, King and Company Sterling Chick Feed bag, dated between 1921 and 1950. Printed with nutritional information and an ingredient list.

Man with vegetables grown from Northrup, King seeds, 1921. Photographer: Charles J. Hibbard.

Northrup, King and Company load of popcorn, 1920. Photographer: Charles J. Hibbard.

Double-sided, wood-framed, painted trade sign advertising Northrup, King and Company's Sterling seed corn, 1917. Made by the E.E. Peterson Sign Company.

Northrup, King and Company seed separator/cleaner, 1917. Photographer: Charles J. Hibbard.