Surface water supply of the United States, 1929. Part I. North Atlantic slope drainage basins. Nathan C. Grover, chief hydraulic engineer. M.R. Stackpole, H.B. Kinnison, P.I. Bigwood, A.W. Harrington, O.W. Hartwell, A.H. Horton, and J.J. Dirzaulaitis, district engineers. [U.S. Geological Survey Water Supply Paper 681.]