As Goldstein explains it, he was growing busier as a performer, and so had less time fopr marketing and promoting his mentalism booklets.  So despite the continued success of the Blue book and Red book, he began printing fewer copies of each subsequent book.  For this reason the Green book is harder to find than the Blue or Red book, because there were only about half as many printed.   (The next books, Yellow and Violet, he printed even less...)

The green book includes some of my favorite routines from the entire Color series:  Destiny, Nucleus, Old Math and The Mind's Eye deck.   (I remember hand drawing the symbols on blank cards the first time I made a Mind's Eye Deck, and I have used it now for over 40 years!)

  Now a very collectible book, but also worth the money for the material.   This is a thin book -- 25 pages -- but every page is good stuff! 

previously owned but in excellent condition -- clean and unmarked, no torn or loose pages.  Cover has a slight bend/warp vertically down the center, which you might be able to see in the photo, but it is very slight.   Edges of pages are slightly browned