[ART REFERENCE -- ITALIAN]. VAN MARLE, Raimond. The Development of the Italian Schools of Painting. The Hague, 1923. 10 vols. -- SIRÉN. Leonardo da Vinci, L'Artiste et L'Homme. Paris and Brusseles, 1928. 3 vols. -- AINE, H. Roux. Herculanum et Pompei. Paris, 1870. 6 vols. -- GUSMAN, Pierre. La Décoration Murale a Pompéi. [Paris, 1924]. -- MÜNTZ. Leonardo da Vinci. London, 1898. 2 vols. -- CLARK, Kenneth A. A Catalogue of the Drawings of Leonardo da Vinci. New York and Cambridge, 1935. -- and 55 others. Together 78 vols., most 2o and 4o (conditions vary). (78)