I found these while looking for the docs for my SWTP CT1024 terminal board
that I'm resurecting (it works)
These are available for sale or trade:
SWTP PR40 schematic and wiring drawing (D size sheet two sided)
SWTP MP-S serial interface (SS50, 6800) assembly, schematic
and board views.
Ohiso Scientific sams photofact service manual complete for:
Superboard-II
Model C1P
Model C1PMF
Allison