The Gospel of St. John and its relation to the other Gospels
A lecture cycle by Rudolf Steiner given in Kassel, Germany (14 lectures) (GA 112) June 24 - July 7 1909
For your convenience, below is a zip file of this entire set of lectures. It does require that you have an unzipping utility of some kind on your computer. For you mac people this is built in.
The Entire Book of The Gospel of St. John and Its Relation to the other Gospels