What's the point of including books that aren't public domain yet in your collections?

It makes it hard to browse those collections to find actual books to read. The first 3 series I clicked on all said "not P.D." (which at first I didn't know what "P.D" meant - remember your audience does not have your level of familiarity with your context, perhaps a tooltip on that badge would help)..

Then I see "this book will enter public domain in 2050"..

I commend you for this project, it's really awesome work.. From a user's experience, it would be great to have a filter on your various lists that restricts only to books that are available, and excludes these books that are not yet in your collection.