In case this is of interest to anyone else on the list, I found my SDK-85
Data Sheet and User's Manual (1977) and have scanned the sheet. It may be a
while before the User's Manual is done, since I've already got a number of
things ahead of it. The Data Sheet is available in G4 TIFF right away,
though I can, potentially translate it to some other bitmap format.
Let me know (soon) if you want it. It's 6 pages and the resulting 5-page
G4-TIFF is about 625KB.
Dick