There are lots of goodies at http://www.fairlightus.com.
In fact, they have some of the IIx and III library up as raw waves. But in 16 Khz they sound quite bad IMHO.
Edit: Unfair statement on my part, I only tested a few of the IIx samples there. Sorry.
http://www.fairlightus.com/Downloads/index.php?dir=CMI%2FRaw+Sounds%2F
Under support you can find high quality scans of the various original brochures, manuals and of course links to all the floppy images that I referred to in the top post.
http://www.fairlightus.com/support.html