Volume 165 of Rudolf Steiner's Complete Works
Section of the the Complete Works:
Private Lectures to the Members of the Anthroposophical Society

A cosiderably expanded and much more up-to-date version of this database is available in the Aelzina Books Complete Works Database.

German Title:

Die geistige Vereinigung der Menschheit durch den Christus-Impuls

Title in Literal English Translation:

The Spiritual Unification of Humanity through the Christ-Impulse

Notes on the German Editions:

Known Lecture Dates in the German Volume:

Berlin: 1915-12-19 
Dornach: 1915-12-26 
Dornach: 1915-12-27 
Basel: 1915-12-28 
Dornach: 1915-12-28 
Dornach: 1915-12-31 
Dornach: 1916-01-01 
Dornach: 1916-01-02 
Dornach: 1916-01-06 
Dornach: 1916-01-07 
Bern: 1916-01-09 
Dornach: 1916-01-15 
Dornach: 1916-01-16 

Total Lectures in the German volume: 13

English Publishing History:

Title: The Christmas Thought and the Mystery of the Ego - The Tree of the Cross and the Glden Legend; The Origin of the Christmas Plays - 1 lecture Berlin

Complete German volume?: No
Publisher: Mercury Press
Most Recent Year Published: 1986
Year of original Copyright: 1986
ISBN: 0-936132-84-1
Translator(s): A. Wulsin
Translator(s): Gerald Karnow
Number of Lectures: 1
Number of Pages: 30
Book Type: Pamphlet

Comments: GA 165 contains 13 lectures given in different cities.?>

Google Books link: If Google Books has a page for The Christmas Thought and the Mystery of the Ego by Rudolf Steiner, it will be here.

SteinerBooks Cataloge: If SteinerBooks has The Christmas Thought and the Mystery of the Ego by Rudolf Steiner in stock, it will be here.

Online Sources:

If volume 165 of the Complete Works is available online in the RSArchive, it will be here. (If not, you will get the main page listing all the books that the archive currently has online.)

Other online sources:

SteinerBooks Spiritual Research Center Archive

The information above is believed to be accurate, but may not be complete. Translation of GA title by Daniel Hindes. Assembled by Daniel Hindes with much help.