GUILLAUME-BENJAMIN-AMANT DUCHENNE (DE BOULOGNE). Face in repose, plate 4 from the album, The Mechanism of Human Facial Expression. Dated: 1854-1856. Dimensions: image: 23 × 17.7 cm (9 1/16 × 6 15/16 in.) mount: 39 × 28 cm (15 3/8 × 11 in.). Medium: albumen print, printed 1862.
Face in repose, plate 4 from the album, The Mechanism of Human Facial Expression. Dated: 1854-1856. Dimensions: image: 23 × 17.7 cm (9 1/16 × 6 15/16 in.) mount: 39 × 28 cm (15 3/8 × 11 in.). Medium: albumen print, printed 1862.