Watercolour, pen and ink
288 × 227 mm
Bibliography: Monique Mosser, Béatrice de Rochebouët and Jean-Marie Brussin, Alexandre-Théodore Brongniart (1739-1813), [exhibition, Paris, Musée Carnavalet, 22 April-13 July 1986], Éditions Paris Musées, 1986, p. 289-290