I have finally managed to schedule a rescue near my house, a Data General Nova 4 in a 5' blue DG rack. It's a one-owner system, bought 20+ years ago as a general purpose office computer for a machine shop north of town. Unfortunately, the owner pitched out everything except the rack and rack contents, several years ago. I haven't looked yet, but I suspect that there's stuff to be found on bitsavers. -ethan