Eugène Delacroix (French, 1798-1863) Studies for Muley-Abd-Err-Rahmann, The Sultan of Morocco with atelier stamp (lower left) and inscribed 'Prendre Joseph le Negre/Dessiner sur lui les habillements' (upper left) pen and ink 19.7 x 29.8cm (7 3/4 x 11 3/4in).