GA 345
| No. | Lecture Title | Book Title | Date | City |
|---|---|---|---|---|
| 1. | Lecture I | The Essence of the Active Word | 11 Jul 1923 | Stuttgart |
| 2. | Lecture II | The Essence of the Active Word | 12 Jul 1923 | Stuttgart |
| 3. | Lecture III | The Essence of the Active Word | 13 Jul 1923 | Stuttgart |
| 4. | Lecture IV | The Essence of the Active Word | 14 Jul 1923 | Stuttgart |