JACOB (Max). Art poétique. Paris: Émile-Paul frères, [1922]. -In-16, burgundy chagrin, gilt motif with mosaic flower in center of first cover, smooth spine, beige velvet lining and endpapers, gilt head, untrimmed, cover and spine preserved (modern binding). First edition. A copy of the current edition, enriched with this fine autograph letter signed by the author: "to Martin du Gard // this book which will teach him // nothing but whose offer is // a token of friendship // Max Jacob." The author is probably the writer and journalist Maurice Martin du Gard (1896-1970), with whom Max Jacob corresponded. A fine copy. Spine lightened.