I remember printing out project Gutenberg books in the mid-90s, four regular pages to an A4 page, double-sided on my inkjet. I had a background in typography, so I made it work.
Any yes, the text needed a lot of processing to make it right.
Now, in my early fifties and with declining eyesight, that's out of reach now.
Thanks for sticking with the project!
that's cool! one of my "pet-ideas" is actually to make an AI-agent that does all that typographical work for any PG book to make it nicely printable without any manual labor whatsoever. Maybe that's doable now ...