Guillaume-Amant Duchenne de Boulogne, 1855, Duchenne's apparatus for electrotherapy. An early version., Book illustration, Wellcome Collection, Wellcome Library, London (L0011440), LL/36751

Guillaume-Amant Duchenne de Boulogne, 1876, Mécanisme de la Physionomie humaine ou Analyse Electro-Physiologique de l'Expression des Passions, Book title page and plate, 28 x 19.5 cm, Bassenge Photography Auctions, Auction (17 June 2009, Sale 93, Lot 4643a), LL/32570

Guillaume-Amant Duchenne de Boulogne, 1883 (published), Duchenne de Boulogne, faradising the frontal muscles, Lithograph, Wellcome Collection, Wellcome Library, London (M0011346), LL/36750

Guillaume-Amant Duchenne de Boulogne, 1876, Mécanisme de la Physionomie humaine ou Analyse Electro-Physiologique de l'Expression des Passions, Book title page and plate, 28 x 19.5 cm, Bassenge Photography Auctions, Auction (17 June 2009, Sale 93, Lot 4643a), LL/32573

Guillaume-Amant Duchenne de Boulogne, 1876, Mécanisme de la Physionomie humaine ou Analyse Electro-Physiologique de l'Expression des Passions, Book title page and plate, 28 x 19.5 cm, Bassenge Photography Auctions, Auction (17 June 2009, Sale 93, Lot 4643a), LL/32571

Guillaume-Amant Duchenne de Boulogne, 1876, Mécanisme de la Physionomie humaine ou Analyse Electro-Physiologique de l'Expression des Passions, Book title page and plate, 28 x 19.5 cm, Bassenge Photography Auctions, Auction (17 June 2009, Sale 93, Lot 4643a), LL/32572

Guillaume-Amant Duchenne de Boulogne, 1862, Page from "Mecanisme de la Physionomie Humaine", Pl.1, Book plate, National Science and Media Museum, LL/39431

Guillaume-Amant Duchenne de Boulogne, 1862, Page from "Mecanisme de la Physionomie Humaine", Pl.4, Book plate, National Science and Media Museum, LL/39433

Guillaume-Amant Duchenne de Boulogne, 1862, Page from "Mecanisme de la Physionomie Humaine", Pl.5, Book plate, National Science and Media Museum, LL/39432

Guillaume-Amant Duchenne de Boulogne, 1862, Page from "Mecanisme de la Physionomie Humaine", Pl.6, Book plate, National Science and Media Museum, LL/39429

Guillaume-Amant Duchenne de Boulogne, 1862, Page from "Mecanisme de la Physionomie Humaine", Pl.8, Book plate, National Science and Media Museum, LL/39430

Duchenne & Adrien Tournachon, n.d., Plate Nr. 6, [Mécanisme de la physionomie humaine, ou analyse électrophysiologique des passions], Albumen print, 4 1/2 x 3 5/8, Charles Nes Photography LLC New York - Paris, LL/5774

Duchenne & Adrien Tournachon, n.d., Plate Nr. 81, [Mécanisme de la physionomie humaine, ou analyse électrophysiologique des passions], Albumen print, 4 1/2 x 3 5/8, Charles Nes Photography LLC New York - Paris, LL/5773

Duchenne & Adrien Tournachon, n.d., Plate Nr. 10, [Mécanisme de la physionomie humaine, ou analyse électrophysiologique des passions], Albumen print, 4 1/2 x 3 5/8, Charles Nes Photography LLC New York - Paris, LL/5776

Duchenne & Adrien Tournachon, n.d., Plate Nr. 57, [Mécanisme de la physionomie humaine, ou analyse électrophysiologique des passions], Albumen print, 4 1/2 x 3 5/8, Charles Nes Photography LLC New York - Paris, LL/5777

Duchenne & Adrien Tournachon, n.d., Plate Nr. 64, [Mécanisme de la physionomie humaine, ou analyse électrophysiologique des passions], Albumen print, 4 1/2 x 3 5/8, Charles Nes Photography LLC New York - Paris, LL/5778

Duchenne & Adrien Tournachon, 1862, From "Mecanisme de la Physionomie Humaine ou Analyse Electro-Physiologique de L'Expression des Passions" (Paris: Chez ve Jules Renouard, Libraire, 1862), [Mecanisme de la Physionomie Humaine ou Analyse Electro-Physiologique de L'Expression des Passions], Swann Galleries - New York, Courtesy of Swann Galleries (Auction, May 22, 2007, #2115, Lot 59), LL/19221

Guillaume-Amant Duchenne de Boulogne, 1862, The facial expression of terror on the human face being induced by electrical currents., Book illustration, Wellcome Collection, Wellcome Library, London (L0037463, Library reference no.: GC XWM), LL/36752

Guillaume-Amant Duchenne de Boulogne, 1862, The facial expression of attention on the human face being induced by electrical currents., Book illustration, Wellcome Collection, Wellcome Library, London (L0040050, Library reference no.: GC XWM), LL/36753

Guillaume-Amant Duchenne de Boulogne, 1862, The facial expression of astonishment on the human face being induced by electrical currents., Book illustration, Wellcome Collection, Wellcome Library, London (L0040104, Library reference no.: GC XWM), LL/36754

Guillaume-Amant Duchenne de Boulogne, 1862, The facial expression of fear on the human face being induced by electrical currents., Book illustration, Wellcome Collection, Wellcome Library, London (L0040111, Library reference no.: GC XWM), LL/36755

Guillaume-Amant Duchenne de Boulogne, 1862, The facial expression of flirtatiousness on the human face being induced by electrical currents., Book illustration, Wellcome Collection, Wellcome Library, London (L0040119, Library reference no.: GC XWM), LL/36756