Context

Context of Surface water supply of the United States, 1922. Part V. Hudson Bay and upper Mississippi River basins, [by] Nathan C. Grover, chief hydraulic engineer, W.A. Lamb, S.B. Soule, E.D. Burchard, J.B. Spiegel, H.E. Grosbach, and E.L. Williams, district engineers. [U.S. Geological Survey Water Supply Paper 545.].