Giorgio Sommer, ‘Impronte umane (Pompeii)’, 1873, National Gallery of Art, Washington, D.C.
image: 18.1 x 25.1 cm (7 1/8 x 9 7/8 in.)  sheet: 29 x 37.1 cm (11 7/16 x 14 5/8 in.)

About Giorgio Sommer