GA 197
| Date | Title | City |
|---|---|---|
| 05 Mar 1920 | Polarities in the Evolution of Mankind I | Stuttgart |
| 07 Mar 1920 | Polarities in the Evolution of Mankind II | Stuttgart |
| 09 Mar 1920 | Polarities in the Evolution of Mankind III | Stuttgart |
| 13 Jun 1920 | Polarities in the Evolution of Mankind IV | Stuttgart |
| 24 Jun 1920 | Polarities in the Evolution of Mankind V | Stuttgart |
| 25 Jul 1920 | Polarities in the Evolution of Mankind VI | Stuttgart |
| 30 Jul 1920 | Polarities in the Evolution of Mankind VII | Stuttgart |
| 21 Sep 1920 | Polarities in the Evolution of Mankind VIII | Stuttgart |
| 08 Nov 1920 | Polarities in the Evolution of Mankind IX | Stuttgart |
| 14 Nov 1920 | Polarities in the Evolution of Mankind XI | Stuttgart |
| 22 Nov 1920 | Polarities in the Evolution of Mankind XI | Stuttgart |