George R.R. Martin has published an excerpt from The World of Ice and Fire (Pre-order: Amazon US, Amazon UK), the guide to the setting and history that Martin has co-written with Linda and I.
The sample includes a piece of brand new art from the book, which will be extensively illustrated. The sample features the opening few pages of the section devoted to House Targaryen, describing briefly their time on Dragonstone… and ending with Aegon’s declaration of war against the kingdoms of Westeros, as he and his sisters prepared to invade.