[Lore Character]'s Chronicle of Dragons. Top three candidates being Tiamat, Bahamut, and Meepo.
Edit: No, on reflection it won't be Tiamat or Bahamut. The title character has to be able to provide the clever lore notes in the book's interior, and dragon gods are too high a perspective for that. So I'll put a small bet directly on Meepo's Chronicle of Dragons, though I'm open to other suggestions.