Suggestions On A PDP-12 Hunt?

Hi, all. So it's like this: I've decided, for reasons which even I don't quite understand, that I should find a computer to restore to keep my old PDP-8/I from getting lonely, and (to keep things complicated) that the new machine should be a PDP-12. It's not _quite_ as involved as searching for the Holy Grail, but they're certainly not common. :) I've been going (by phone and e-mail) to check in a lot of the usual places - electronic surplus stores, university surplus, and so forth - and have also started checking around with neurologists and neurology departments, since I gather the -12s were popular choices in neurological research. So far I've had a few good-sounding leads which haven't gone anywhere useful. But it's still early in the search. I'm open to suggestions. :) Anyone have any good ideas, leads or recommendations on where else to look? (It need not be a working one, since I'm planning to restore it anyway.) (O'course, if anyone has a PDP-12 they're willing to consider parting with, I'd certainly be amenable to discussing it... <grin!>) Suggestions? -O.-