Kallikak -- VERY interesting! A little Googling turned up references to 6.0.7J and the early 'books.

The most intriguing one was a Japanese site. The fractured translation can be found here:

http://translate.google.com/translate?hl=en&sl=ja&u=http://www.mamina.jp/mac/mysystemold.html&sa=X&oi=translate&resnum=3&ct=result&prev=/search%3Fq%3D6.0.7j%26start%3D10%26hl%3Den%26sa%3DN

It would seem that it's so!

Now I'll have to hunt down a copy of 6.0.7J to see how it can be hacked to install in English.

Thanks, Kallikak -- now you've triggered a major hunt!