But I was hoping for something with a little more of the design rationale. Maybe this is what I'm looking for. http://www.amazon.co.uk/The-Future-Was-Here-Commodore/dp/026...
For anybody interested in business (like the HN readership) I really recommend studying not only about the history of Apple, but the history of its early competitor Atari. Equally as interesting and represents a kind of alternate universe where the Google of its time failed spectacularly. The reasons why are complex and very informative, especially the Tramiel years.
Some samples:
There's not many books looking back, but there are a few and they're quite good:
http://www.amazon.com/The-Future-Was-Here-Commodore/dp/02620...
http://www.amazon.com/Atari-Inc-Business-Complete-History-eb...
http://www.amazon.com/Edge-Spectacular-Rise-Fall-Commodore/d...
http://www.amazon.com/Steve-Jobs-Walter-Isaacson/dp/14516485...
Classic magazines:
https://archive.org/details/computermagazines
There's also plenty of old shows both archived, and made more recently, some with a stunning number of important interviews
https://archive.org/details/computerchronicles
https://archive.org/search.php?query=creator%3A%22Dr+Sparkle...
https://archive.org/details/thescreensavers
https://www.youtube.com/user/MrGameSack
https://www.youtube.com/user/tezzaNZ
https://www.youtube.com/user/blacklily8
And there's a vast retrogaming/retrocomputing podcasting phenomenon going on right now, often with even more amazing interviews
http://ataripodcast.libsyn.com/
and a larger list https://news.ycombinator.com/item?id=8544576
What's nice is that this all happened recently enough that you can actually go to the primary sources and read/listen/talk with these events as they happened, but can now look back informed by decades of the aftereffects.