Goethe's Die Geheimnisse in English

Of Goethe's late, unfinished poem Die Geheimnisse (The Mysteries) Corbin writes

"the meaning given by Goethe to the pleroma of the twelve Knights corresponds to the meaning of the pleroma of the twelve Imams in a most striking manner, significant for the religious history of humanity. It is in the field of consciousness thus delimited by the assembly of the Twelve united around the Friend of God of the Oberland and by the assembly of the Twelve Knights that Goethe unites around the summit of an ideal Mont-Serrat, that we may observe at work the lines of force that blossom in the heart of Shi'ism in the idea of a spiritual chivalry common to the entire Abrahamic tradition, which also opens out in the work of Wolfram von Eschenbach in the idea of a chivalry common to the knights of both Christianity and the Orient, that is to say, in Islam." (En Islam Iranien IV, 393).

I said in an earlier post that "Goethe's poem can be found in English in only one place that I am aware of. It is translated in this rare volume by Rudolf Steiner: The Mysteries: A Christmas and Easter Poem by Goethe = Die Geheimnisse. Spring Valley, N.Y.: Mercury Press, 1987."  I now have a photocopy of this work as published by the Rudolf Steiner Publishing Co., 54 Bloomsbury St., London, 1946. The title page reads  "A Lecture by Rudolf Steiner given at Cologne on 25th December, 1907. Authorized translation from a shorthand report unrevised by the lecturer." I still know of no other English translation, though I would like to be proven wrong by anyone who can do so. I have excerpted the poem, which appears in fragments in this transcribed lecture.

Die Geheimnisse