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System 6 - Wikipedia
System Software (0-6) System 6.x - WinWorld
MacOS System 6 (Version 6.0.8) : Apple Computer - Archive.org
System 6 | Apple Wiki - Fandom
The Joy of Six: Apple’s Fast, Svelte, Reliable, and Still Useful System 6
Disk images - earlymacintosh.org
Announcing Apple IIgs System 6.0.2 - Call-A.P.P.L.E.
Apple System 6 | IT History Society
All Mac OS System 6 Disk images : Apple - Archive.org
Apple - Support - System Status