I found new high quality scans of KIM-1 manuals on the Retro Commodore website.
That website is filled with high quality scans of Commodore publications.
High quality scans of the User, Programming, Hardware manuals. Also scans of KIM-5 related manuals like Assembler and Editor (a new one for me!).
The originals are from a German distributor, there is a sticker on the frontpage.
I thank Carsten Jensen for his invaluable work!