Surface Water Supply of the United States, 1923. Part V. Hudson Bay and Upper Mississippi River Basins, [by] Nathan C. Grover, Chief Hydraulic Engineer, W.A. Lamb, S.B. Soule, J.B. Spiegel, H.E. Grosbach, E.L. Williams, and H.C. Beckman, District Engineers. [U.S. Geological Survey Water Supply Paper 565.].
