Cloud Study, Roman Campagna, circa 1860

Date: circa 1860. Dimensions: image: 18.9 × 26.4 cm (7 7/16 × 10 3/8 in.); ; mount: 24.3 × 31.6 cm (9 9/16 × 12 7/16 in.). Medium: albumen print, negative, paper. Collection: National Gallery of Art.