William James Stillman, ‘The Acropolis of Athens, plate 20’, 1869/1870, National Gallery of Art, Washington, D.C.
image: 23.8 x 18.7 cm (9 3/8 x 7 3/8 in.)  mount: 53.1 x 36.8 cm (20 7/8 x 14 1/2 in.)

About William James Stillman