Do any of you have M$ Word running in present form?
My old man has a bunch of .dox stuff saved. He has complicated large files saved that are not supported by any of the FOSS conversion tools. I've tried Libre office, Abi Word, and every command line tool and converter I can find. These are entire book sized files.
I have a W10 machine with Word. Is extracting the .exe and running it with wine feasible without making an epic mess or massive project of this?
You can try Pandoc and see if that works, Google Docs, Office365, finding an abandonware version of Word and running on Wine...lots of options to work with.
It might be easier to start narrowing down where you need to look if you get the header info from one of these files.