I've taken apart a few machines to send ICs to a guy who'll try to read as many of them as possible.
I've used this opportunity to take a few more pictures, and in some cases re-read eproms.
Here are some pictures of the NCR DMV's keyboard DMV Keyboard
Here are pictures and the ROMs of the Siemens PC-D's keyboard and harddisk controller PC-D HD and keyboard
I'll add the rest when I get the results from this reading frenzy :-)