Todd, Pennie & Co, Brick Mnfrs. (Minnesota State Gazetteer and Business Directory, 1878-9, Volume 1, R. L. Polk & Co., and A. C. Danser, Detroit, Michigan, Page 592)
Spring Valley. Todd, Pennie & Co, brick mnfrs. (Minnesota State Gazetteer and Business Directory including Dakota Territory 1880-81, Volume II, R. L. Polk & Co. and A. C. Danser, St. Paul and Detroit, Page 681)
The loess covers the eastern two-thirds of the county (Fillmore), where it forms a mantle varying in thickness from 2 to 20 feet over the Paleozoic formations. Its greatest thickness is seen at the base of the slopes along the valley. On the high prairie land, although it is not so thick, it is much more evenly distributed. Many abandoned yards have used it in the past. Such yards occur at Rushford, Peterson, Whalen, Lanesboro, Fountain, Spring Valley, Carimona, Forestville, Harmony, and Mabel. Material for red brick is still available at each of these places. (Clays and Shales of Minnesota, Frank F. Grout and E. K. Soper, The University of Minnesota, Minneapolis, Minnesota, 1914, Page 100)