Recto: On Timber, the Species of Trees (Vitruvius, Book 2, Chapter 9, no. 4); Verso: On Timber, the Battle of Larignium (Vitruvius, Book 2, Chapter 9, no. 15)., 1530–45
Drawing. Date: 1530–45. Dimensions: sheet: 5 7/8 x 10 3/8 in. (15 x 26.4 cm). Medium: pen and dark brown ink. Collection: Metropolitan Museum of Art.
