The Holy Grail - German Contributions to an Understanding of the Holy Grail

In the 1930's some very important discoveries were made regarding the Grail by German researchers, can you pin point what these discoveries were and how the changed history and the interest in the Grail?

This is a compilation of different contributing authors (anthroposophical) on the Theme of the Grail, and was compiled after important discoveries were made regarding the Manicheans.

Ruddy Krott
Otto Rahn
Gunther Wachsmuth
Dr.Maurer