Because AmigaOS just isn't obscure enough today!
Original artwork, information and manuals.
Click on the photos for bigger version.
(More to be added soon - see also below at External links)
Using Amiga Unix
Addendum: Updates to the Using Amix manual for version 2.0
AT&T System V Release 4 Documentation in Archive.org
More manuals (from www.retro-commodore.eu):
Installing Amiga Unix (searchable PDF)
Learning Amiga Unix (searchable PDF)