Charles-Melchior Descourtis after Caspar Wolf, ‘La Lutschinen sortant du Glacier inférieur du Grindelwald’, 1785, National Gallery of Art, Washington, D.C.
plate: 31.9 x 43.6 cm (12 9/16 x 17 3/16 in.)  sheet: 33.9 x 49 cm (13 3/8 x 19 5/16 in.)