Amiga UNIX is quite rare, but even more rare are the draft manuals for the OS, thanks to Camilla Boemann,
Amiga UNIX Installing and Learning Amiga UNIX draft and Software Guide. (Using Amiga UNIX is yet to be scanned).
Manuals -> Hardware Manuals -> Amiga Manuals
From the deep bowels of datamuseum.dk‘s basement, parts of amiga unix sees the light of day.
Commodore 3070 Tape Drive Installation Guide, and disk (needs amiga unix).