Book of Prophecies

The Book of Prophecies was a book written by Christopher Columbus, obtained by Ezio Auditore da Firenze in the 16th century in Constantinople

Summary
Written near the end of the famous Genoese Admiral's life, the "Book of Prophecies" is a curious blend of self-aggrandizement, eschatology, and apocalyptic fear-mongering: the sad, strange legacy of a chronically frustrated explorer who just wanted to hang out with Jesus before the end of his life.

Source

 * Assassin's Creed: Revelations