"Guillaume-Benjamin-Amant Duchenne (de Boulogne), Slight lowering of the angle of the mouth due to depression (left); False laughter (right), 1854-1856, albumen print, printed 1862, image: 22.8 × 16.4 cm (9 × 6 7/16 in.)
mount: 40.3 × 27.8 cm (15 7/8 × 10 15/16 in.), Pepita Milmore Memorial Fund, 2015.52.23"