HP Apollo 400t machines & software

Any Apollo users out there? A chap dropped off a couple of Apollo 400t machines at the museum today (circa 1990 vintage) with numerous manuals. First time I've seen one in years - I remember a room full of them at uni behind a glass partition wall, not usable by us mere mortals, and always wanted to get hold of one since then. Initial questions from the 5 minutes I had free today to actually *look* at the things (damnit!): Anyone (hopefully in the UK!) got a spare Domain keyboard? Both machines work, but only came with the one keyboard :-( I have a feeling the chances of finding one are something like zero... Anyone got install media preserved anywhere? (We've got a backup CD, plus I'll image the hard disks - but a copy of proper install media would be nice) How's the Apollo token ring network physically configured? Presumably something somewhere needs to bias the line at the very least? (We got a cable with each machine that brings the card connector out to a pair of BNC plugs) Any idea what tape drive the systems used (I've seen reference to optional tape drive in the manuals) and if it was just a SCSI device on the bus, or whether it used a custom controller? Any other UK people got any more Apollo stuff they no longer want? ;-) cheers! Jules