Internet Archive version: https://openlibrary.org/

Info on where to send books not yet in their collection: https://help.archive.org/help/how-do-i-make-a-physical-donat...

Mobile apps to determine if they need a book: https://help.archive.org/help/donate-books-app-for-ios-and-a...

Web app: https://archive.org/want/?mode=donation_book

For example, I donated a copy of Systems Bible (out of print, hard to find imho) and paid for it to jump the digitization queue (https://archive.org/details/systemsbiblebegi0000gall/). The original book will remain stored as a physical backup. It's not fully publicly available of course due to copyright (it will eventually be made public by the Internet Archive once its copyright expires ~2084 and it enters the public domain), which is where shadow libraries|archives like Anna's Archive and Z-Library fill the gap.

If you have rare books you would like digitized, archived, and distributed, I am very interested in providing assistance.

As an aside... https://www.google.com/books/edition/The_Systems_Bible/mrOsb... (and I haven't hit any "you can't read this" limits yet).

While the hard copy is a bit pricy for my shelf of curious books, it's also available on kindle. https://www.amazon.com/SYSTEMANTICS-SYSTEMS-BIBLE-John-Gall-...