Instead of creating a repository, I'm working on a website that can generate exactly this kind of content in PDF and that you can customize to your own taste too, Sponge_Bath. Files are nice, but generating them is much flexible, this way you can add table of contents or create PDFs for more than a single device.
Take a look at the topic I've started:
https://www.mobileread.com/forums/sho...?threadid=9165
Still in beta, but we're working on removing any bug that we find, and we'll add more and more books in the first section of the website (btw, anyone can send a book too in this section, we'll just check if it's in the public domain or not before showing it on the website).