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Hysterical woman yawning seven times per minute

Photography by influential French photographer Albert Londe (1858-1917). (Source: Gilles de la Tourette G, Huet E, Guinon G. Contribution à l’étude des bâillements hystériques. Nouvelle Iconographie de La Salpêtrière 1890;T.3:Pl. XVIII. Courtesy of the Wellcome Collection, London, United Kingdom. Photographs edited by Dr. Douglas J Lanska to remove artifacts and to improve coloration [from yellowing], contrast, and sharpness.)