Bruxelles, Palais des Académies, 1963, in-8°, 101 pp, 16 black/white illustrations. Published by the Académie royale de Belgique, Classe des Beaux-Arts, Mémoires in-8°, Tome XIII, Fascicule 2. Sewn, orig. stiff wrapper. Partly unopened copy. Texrt in French. With manuscript ex-dono of the author.