When I clicked on the Facebook page that I cited above, it indicated that “this content isn't available right now.” I got essentially the same results when I looked on Amazon.com for used copies. It probably will resurface at some point if you scour the Internet long enough for used book sources, such as Amazon.com, Alibris, Abebooks, etc. However, given its limited edition status and the impressive standards to which it was published, it almost certainly will sell for a very pretty penny, and there is no telling how long it might take to track down a copy.
On the other hand, if you are only interested in reading, as opposed to purchasing or giving, a copy of this book, you can probably obtain one via inter-library loan.