Index of Surface-water Records: Part 7, Lower Mississippi River Basin to September 30, 1950, Issues 135-144
Charles Franklin Keech · Donald J. Miller · Edward Peck Kaiser · Elizabeth B. Jaffe · Mortimer Hay Staatz · Victor Thomas Allen · Geological Survey (U.S.). Water Resources Division. Boston District · Geological Survey (U.S.). Water Resources Division. Oklahoma City District · Herman L. Bauer · Geological Survey (U.S.). Water Resources Division. Salt Lake City District · Geological Survey (U.S.). Water Resources Division. Tucson District
Jan 1949 · U.S. Department of the Interior, Geological Survey