| Clue | Source | Date |
|---|---|---|
| Viennese analyst | Newsday | 07 Aug 2022 |
| 'The Interpretation of Dreams' writer | New York Times | 27 Feb 2018 |
| "The Interpretation of Dreams" writer | ||
| 'The Interpretation of Dreams' author | Wall Street Journal | 03 Oct 2016 |
| Rival of Carl Jung | ||
| He used to appear on the 50-schilling note | ||
| 20th cen. pioneer in study of the mind. |