Approach to Montevideo, Uruguay, 1832, Watercolor over graphite, sheet: 7 13/16 x 11 11/16 in. (19. 8 x 29. 7 cm), Drawings, Conrad Martens (British, London 1801?1878 Sydney), Martens made this drawing at Montevideo, where he accepted a two-year position as topographical artist on the ship Beagle, to survey the coasts of Patagonia and Tierra de Fuego (joining Charles Darwin as one of company)