EditorialPerspectival Cross-Section of a Venetian Palace, 1830?79, Pen and gray ink, brush and light wash, metal point framing lines, with small spatters of brown wash, 9 3/4 x 13 1/4 in. (24.8 x 33.7 cm), Eug?ne-Emmanuel Viollet-le-Duc (French, Paris 1814?1879...