I just a couple of days ago picked up a VAX 11/750.
This machine has
been stored in a damp shed for ten years or so, has had mice living in it,
Sounds like you are in for a bunch of fun !
If the mice chewed through the docs you can find a set of prints
and a few manuals at:
http://208.190.133.201/decimages/moremanuals.htm
I don't think the Installation and Acceptance manual covers
infestation in great depth though :-)
Antonio