- Geological and Natural History Survey of Minnesota (6)
- United States. Bureau of Soils (5)
- University of Minnesota. Agricultural Experiment Station (5)
- Elwell, J. Ambrose (John Ambrose), 1897- (4)
- A. Hoen & Co (3)
- Williams & Heintz Co (3)
- Bodman, G. B. (Geoffrey Baldwin), 1894-1993 (2)
- Bourquin, F. (Frederick), 1808- (2)
- Bracher, Wm. (William) (2)
- Hasty, A. H (2)
- McMiller, P. R. (Paul Raymond), 1887-1956 (2)
- Strike, W. W. (Wendell William), 1893- (2)
- Baldwin, Mark (1)
- Beck, M. W. (Miles Walter), 1891- (1)
- Boatright, W. C (1)
- Buechner, Louis (1)
- Charles Shober & Co (1)
- Cook, Franklin (1)
- Cooley, George W (1)
- Eastern Offset Inc (1)
