St. Lawrence River. Surface water supply of United States, 1941: pt. 4, St. Lawrence River basin; prepared under direction of Glenn L. Parker, chief hydraulic engineer, F. C. Christopherson, D. M. Corbett, H. E. Grosbach, A. W. Harrington, H. B. Kinnison, J. H. Morgan, P. R. Speer, and C. V. Youngquist, district engineers.