I had seen this on ebay.com and ebay.de. Since the prices there are astounding, I instead asked a friend of mine called the "Internet".
And he tells me:
http://www.pixsoriginadventures.co.uk/category/books/system-shock-2-official-guide/
Download here: http://www.pixsoriginadventures.co.uk/downloads/

It's the official System Shock 2 strategy guide!

"Many of the textures in the Body of The Many were derived from the colon of Josh Randall.[...] He had to have an endoscopy performed, and asked the doctor for a copy of the film" page 127- See it here

I want it but why's it gotta be  >100 bucks?

I feel even closer to Josh now than when he released Shock Live 2010.
Added the guide to the first post. Great find again atropos!