We've seen these found documents before, of course: Things like individual entries in the Enciclopedia Xenobiologica, or internal corporate memos, or private letters held in La Familia's vaults. And as the story unfolds on, it's undoubtedly something we'll see again.
(Speaking of the full story: We're putting the finishing touches on the new DRIVE site, but in the interim, you can always read the story -- in order -- over at the temporary site.)