GA 299
| Date | Title | City |
|---|---|---|
| 26 Dec 1919 | Lecture I | Stuttgart |
| 28 Dec 1919 | Lecture II | Stuttgart |
| 29 Dec 1919 | Lecture III | Stuttgart |
| 31 Dec 1919 | Lecture IV | Stuttgart |
| 02 Jan 1920 | Lecture V | Stuttgart |
| 03 Jan 1920 | Lecture VI | Stuttgart |
| 06 Mar 1914 | Questions and Answers | Stratford |