A thomsonite-lintonite nodule from Grand Marais, Minnesota. From the Richard Hauck collection. Photograph by Wikimedia Commons user Robert M. Lavinsky before March 2010, CC BY-SA 3.0.
Egekvist Bakery store clerks Helen Broberg (left), Marian Lawrence (center), and Elvera Dahl (right), 1936. From the Minneapolis Newspaper Photograph Collection, Hennepin County Library Special Collections.
Three-M-ite sample collection, 1935. 3M’s first profitable product was Three-M-ite, a flexible sandpaper. Here, Three-M-ite was packaged as a sample so prospective buyers could see the product.
Threshing near Le Center (Le Sueur County), ca. 1900. The colony of St. Henry, located west of Le Center in Le Sueur County, was the center of farming development by Romansh immigrants to Minnesota.