Jean-Jacques de Boissieu, ‘The Spring at l'Orsière’, 1759, National Gallery of Art, Washington, D.C.
plate: 11.2 x 15 cm (4 7/16 x 5 7/8 in.)  sheet: 11.9 x 15.5 cm (4 11/16 x 6 1/8 in.)

About Jean-Jacques de Boissieu