The starring book is a story of a woman's travels amongst the Bedouin tribes in the late 1800's. It includes a delicate, tissue-thin fold-out sections with maps, and illustrations of horses.
Other books are encyclopedia - newer, modern but still quality, and a sheaf of papers that prove to be printouts in glossy color of old illustrations, coins, and artwork. The theme that quickly comes to Zara is that of horses - or more specifically, a particular breed of horses, once though a myth, and then for many hundreds of years strictly guarded and hidden away.
He quietly remarks, "The Akhel-Teke, one of the veritable kings of horses."