The graphic designs of Sassy are ususally connected with his drawing series entitled Opium Dreams. His ex libris designed for Nándor Gyöngyösi (1891- 1967), an economist, doctor of philosophy and journalist also bears the linear and decorative characteristics. The surface is decorated with contrastive empty patches and detailed, crowded line networks suggesting horro vacui. The surface is interpreted in a way similar to Beardsley, using consequently two dimensions only and following Klimt with his entangled ornaments.