Wow. I just found out that this (and, by extension, LibreOffice) can read all my old MacWrite Pro files that I'd given up hope of ever reviving. There goes the rest of the day digging through them all...
Access doesn’t really have “documents” as such. Its a relational database, with tables full of records.
(Not that I disagree with the general idea: it would be great to have solid tools for migrating old Access databases to something open. I have no idea whether these exist or how good they are.)