This is fantastic work, thanks. Hmm, what else... let's see... Xenix also really, really wants to be free! What a magnificent piece of forgotten computer history it is. https://en.wikipedia.org/wiki/Xenix
DOS 5 was when I really got into computers. I spent hours pouring through the included manual learning all the shell commands and learning how to write .BAT files. Then I discovered QBasic and it changed everything.
It's fantastic work you've done. As someone who works at a older software company (founded early 80s), I'm sad that there isn't a push internally for us to make our old software source available, or even just the binaries available!
What sort of tactics did you use to convince them? Maybe I can apply them to where I work too...