Per the Kickstarter page:
This is a limited edition reprint (1000 copies) of the Ace of Aces: Hand Roatary Series. It consists of two 200+ page books, which are all you need to play the game. Because of the page count and heavy use the books undergo,the binding will be sewn, not glued. The original leatherette style covers will be used and they will come in a slipcase, similar to the original.