Surface water supply of the United States, 1939, Part VII, Lower Mississippi River basin - Paulsen, C.; Barber, D.H.; Beckman, H.C.; Ellsworth, C.E.; Follansbee, Robert; Johnson, Berkeley; Saunders, J.L.; McCashin, C.E.; Spiegel, J.B.; Veatch, F. (Water Supply Paper, 1940)