EditorialCeiling Design with the Mystical Wine Press, ca. 1750, Pen and black ink, gray wash, red chalk, squared in red and black chalk, Sheet: 13 3/16 ? 11 3/16 in. (33.5 ? 28.4 cm), Drawings, Johann Georg Dieffenbrunner (German, Mittenwald 1718?1785 Augsburg).