Found on HN: “The History of OS/2”, a series of articles by Michal Necasek originally hosted on the now defunced pages.prodigy.net/michaln/ (archive.org), mirrored on Rob Landley’s homepage. (Be sure to have a look at the local mirror index.)
I’ve only had a look at the first article on the beginnings, yet, but it’s certainly an entertaining write-up.
(Image: Michal Necasek/Rob Landley.)
Related HN discussion: https://news.ycombinator.com/item?id=28780433