Edward A. Moulder, Edwin Wallace Lohr, Frank Saverio Grimaldi, Geological Survey (U.S.). Water Resources Division, George Lawrence Bodhaine, Judith Weiss Frondel, Loyd L. Young, Max Gregg White, Robert Paul Jones, Walter Stanley White, Alfred E. Torrey, Benjamin Earl Jones, Michael Fleischer, Norman MacLaren Denson, W. H. Robinson, F. C. Koopman · 1949