This article is from the Macintosh system software FAQ, by Elliotte Harold firstname.lastname@example.org with numerous contributions by others.
The PowerBook 100, Classic II, LCII, Performa 200, and Performa
400 all work with System 6.0.8L, a special foreign version of System
6.0.8 that was hacked together because these machines beat many of
the internationalized versions of System 7 to market. I do not know
where you can find System 6.0.8L. If anyone does know please tell
me, and I'll add it here.