Speaking of the 1983 edition, apparently it was released in July 1983, according to the KQ Collection manual. At that time it must have been released only to a few individuals, since at that time there were apparently only a few PCjr demonstration models... But Sierra was apparently selling those copies to the the public.
The main public release of PCjr apparently wasn't until May 1984 (more or less coinciding with the minor package update release of KQ1).
I don't know if the 1984 releases modified Graham's name or not from "Grahame" to Graham..
KQ8 Law: As an online discussion references or discussing KQ8 grows longer, the probability of a comparison involving it not being a KQ game or not part of the KQ series approaches 1.