Later this year, I have a book coming out on the "Apocryphal"or "Deutero-Canonical" books that are part of the Septuagint or Greek Old Testament, but were removed from the Protestant Old Testament. They are not really lost books. In fact, if you find a book about the "lost books" it is either marketing or books that were never included in any official canon.
Here's the potential cover art:
What do you think of the art? What about the title? Any thoughts?