Charles Mottram after John Martin, ‘The Plains of Heaven’, 1857, National Gallery of Art, Washington, D.C.
image: 62.1 x 95.5 cm (24 7/16 x 37 5/8 in.)  sheet: 103 x 71.2 cm (40 9/16 x 28 1/16 in.)  overall (frame size): 86.4 x 116.8 cm (34 x 46 in.)