In addition to whatever else you do, it would be great if you uploaded each book to the Internet Archive/Open Library, with as much metadata as you can provide

In addition to whatever else you do, it would be great if you uploaded each book to the Internet Archive/Open Library, with as much metadata as you can provide (title, author, publication date…). IA will automatically convert to a few different formats and provides good futureproofing that the unique information your scan provides will never go away.