Gregor,
Only the book Revelation—Its Grand Climax at Hand! It has had its dogma updated in the Watchtower magazines and DC manuscripted talks, but the shell of it still relates the forms, the warp and woof, of the Revelation doctrine.
The interpretation style is still after the fashion of Babylon the Great Has Fallen, but the format has been simplified and the look is more glitzy.
For those of you rolling your eyes at my statement that it is simplified, you OBVIOUSLY don't remember the Babylon the Great book. The question booklet alone was 32 pages of tiny print (if I remember right). I still have the book, but have misplaced my question booklet. It was the size of the early blood booklet.
Respectfully,
AuldSoul