Who was an American writer responsible for a dissertation concerning  the towns and districts built near sediment formations around Lake Superior?
Paul H. Landis: Paul Henry Landis, (5 March 1901 – 30 August 1985) was an American sociologist. Paul H. Landis:  After graduation from the University of Minnesota in 1931, Landis joined the faculty of South Dakota State University (then called South Dakota State College) as an assistant professor in the Department of Rural Sociology. Iron Range:  Despite the word "range," the iron ranges are not mountain chains, but outcrops of Precambrian sedimentary formations containing high percentages of iron.
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