I wrote:
 I've got a lead on a full and working electron
microscope. 
If anyone else is looking, watch :
http://www.msa.microscopy.com/SurplusEquipment/SurplusListings.html
For example, there's an Amray 1000A SEM and a PGT EDS (digitizing
system) with Sun workstation free for pickup, probably in
Marlborough, MA.  (That's not the system I'm grabbing.)
Also, I saw someone mention a pair of (circa 1973)
Interdata Model 7/16 minicomputers for sale on eBay,
as part of a lot they were dumping from their SEM facility.
- John