Old, Obscure HP Product Manuals Source?

[forrestc]

I've ended up with some HP Z2466A VXI cards I'd like to put to use for some automated testing I'm planning on doing (Quad 16x4 solid state relay matrix card).

Unfortunately, the manual for this seems to have been converted to unobtainium once the product was discontinued.   My usually fine google-fu and out of desperation bing-fu, dogpile-fu, etc. etc. etc. has yet to yield a source for a manuals for this.   I've searched on quite a few manual sites I knew of, but still no luck.  The only thing I've found is a couple of catalog pages which describe this product (which happens to be exactly what I'm looking for).   

I'm hoping someone knows of a resource or two I haven't looked at yet.  Ideas?