Study of Clouds over the Roman Campagna
overall (paper support): 19 x 32.1 cm (7 1/2 x 12 5/8 in.)  overall (paperboard support): 19.6 x 33 cm (7 11/16 x 13 in.)  framed: 30.5 x 43.2 x 2.1 cm (12 x 17 x 13/16 in.)

About Pierre-Henri de Valenciennes