Ohio River. Surface water supply of United States, 1940: pt. 3, Ohio River basin; prepared under direction of Glenn L. Parker, chief hydraulic engineer, E. D. Burchard, J. J. Dirzulaitis, H. E. Grosbachi A. W. Harrington, A. H. Horton, William Kessler, J. W. Mangan, C. E. McCashin, J. H. Morgan, D. S. Wallace, J. V. B. Wells, and C. V. Youngquist, district engineers.