Beck, M. W. (Miles Walter), 1891-; Elwell, J. Ambrose (John Ambrose), 1897-; Hall. J. S; Bodman, G. B. (Geoffrey Baldwin), 1894-1993; University of Minnesota. Agricultural Experiment Station; United States. Bureau of Soils; A. Hoen & Co
Created:
1923
Contributed By:
University of Minnesota Libraries, John R. Borchert Map Library.