Charles Franklin Keech / Donald J. Miller / Edward Peck Kaiser / Elizabeth B. Jaffe / Geological Survey (U.S.). Water Resources Division. Boston District / Geological Survey (U.S.). Water Resources Division. Oklahoma City District / Geological Survey (U.S.). Water Resources Division. Salt Lake City District / Geological Survey (U.S.). Water Resources Division. Tucson District / Mortimer Hay Staatz / Victor Thomas Allen / Herman L. Bauer | 