Volume IV of "The Vision and the Voice", derived from the original notebooks as they were transcribed during the Enochian workings of 1909 by Frater O.V. and with various edits and crossouts by Perdurabo after the fact.
The only complete, un-edited edition of "The Vision and the Voice" ever published, with a painstaking line-by-line transcript with premium-quality images of the original pages and ephemera included.