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Drawing, Madonna and Child at two thirds figure, by Raphael, c.1500-1520. Uffizi Gallery
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Drawing of Assault Wagons Fitted with Scythes, by Leonardo da Vinci, 1482-1485
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Drawing, Portrait of a Girl, by Leonardo da Vinci, 1483-1484. Royal Library, Turin
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Charcoal Architectural Study I
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Charcoal Architectural Study IV
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Charcoal Architectural Study II
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Charcoal Architectural Study III
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Dog Days IV
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Dog Days III
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The Mier Expedition: The Drawing Of The Black Bean (Prisoners Drawing Their Beans) 1869
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Chained Prisoner, Seated, 1810-20
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Exercise In Architecture
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A Grand Entrance
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Make an Entrance
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Homage To Howard
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Facade II
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Door III
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Fullsail
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Column II
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Column I
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Classical Figure Study II
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Moose Study
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Door IV
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Engineering equipment
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Elephant Sketch II
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Elephant Sketch I
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Vintage Arbor Study II
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Vintage Arbor Study I
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Chandelier Schematic III
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Figures in a Wooded Glade, 1844
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Botanical Sketch Black and White III
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Classical Figure Study I
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Across the Street II
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Botanical Sketch VI
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Botanical Sketch I
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Beauty in the Mist II Panel
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Botanical Sketch V
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Beauty in the Mist I Panel
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Camera Blueprints IV
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Japan, Bamboo, 1878
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Sepulcher of Paulajo, a Tonga Islands Ruler. 1793
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Botanical Sketch IV
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Camera Blueprints I
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Botanical Sketch Black and White V
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Brooklyn Bridge Panorama
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Botanical Sketch II
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Botanical Sketch Black and White IV
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Camera Blueprints II