Author: S. L. Jacques (auth.), Professor Dr. Rudolf Steiner, Priv.-Doz. Dr. med. Roland Kaufmann, Prof. Dr. med. Michael Landthaler, Prof. Dr. med. Dr. h. c. mult. Otto Braun-Falco (eds.)
Author: G. Michael (auth.), Dr. M. J. Adriani, Dr. Alfred Åslander, Professor Dr. Walter Baumeister, Dr. habil. W. Bergmann, Dr. phil. Richard Biebl, Professor Dr. phil. Eduard v. Boguslawski, Professor Dr. Heinz Ellenberg, Dr. Walter Eschrich, Professor Dr. Hermann Fischer, Dr. Fritz Gessner, Dr. Eric J. Hewitt, H. L. Jensen, Professor Dr. Kurt Kalle, Privatdozent Dr. Werner Krause, Dr. L. Leyton, Dr. Germaine Linnemann, Professor Dr. Elias Melin, Privatdozent Dr. Helmut Metzner, Professor Dr. G. Michael, Professor Dr. André Pirson, Dr. R. N. Robertson, Dr. R. Scott Russell M. A., M. Sc., Ph. D., Professor Dr., Dr. h. c., Dr. h. c. Karl Scharrer, Dr. Th. Schmucker, Dr. phil. Maximilian Steiner, Fil. lic. Göran Stenlid, Dr. Walter Stiles, Professor Dr. Carl Olof Tamm, Professor Dr. Lambert Wiklander, Professor Dr. phil. Hans v. Witsch (eds.)