At Montevideo, Nils Swennungson has made bricks two years; annual product, 60 thousand, selling at $6 to $10 per M [1,000]. This clay is on the general level of the upland, 100 feet above the river. The section is soil, 1 ½ feet; yellow clay, used for brick-making, 3 feet; clayey sand, 6 inches; with clay containing limy concretions below. (The Geological and Natural History Survey of Minnesota, The Eighth Annual Report for the Year 1879, Submitted to the President of the University, Feb. 18, 1880, The Pioneer Press Company, St. Paul, MN, 1880, Page 120)
Red bricks have been made in Montevideo by Nils Swennungson, producing 60,000 yearly, selling at $6 to $10 per thousand. This clay is in the southeast part of the town, on the general level of the upland, 100 feet above the river. The section is soil, 1 1/2 feet; yellow clay, used for brick-making, 3 feet; clayey sand, 6 inches; with clay containing limy concretions below. (A Report on the Geological and Natural History Survey of Minnesota, 1882-1885, Volume II, N. H. Winchell and Warren Upham, Pioneer Press Company, St. Paul, Minnesota, 1888, Page 219)