PAULHAN (Jean). The Key to Poetry, which enables one to distinguish the true from the false in any observation or doctrine concerning rhyme, rhythm, verse, the poet and poetry. Paris : Gallimard, [1944]. - In-12, paperback. First edition. A copy of the press service, offered by the author to Paul Léautaud, enriched with this autograph dedication on the false title: " "Prends garde de te tromper // comme un cyclone." // (Greek proverb) // affectionately to Paul Léautaud // Jean Paulhan // This 21.XII.1944 " Back and edges of the cover faded .