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The face of a soldier suffering from the effects of phosgene gas poisoning during World War I

Pastel by Scottish artist A. Kirkpatrick Maxwell (1884-1975), ca. 1915. (Source: Wellcome Collection, London, UK. Wellcome Library no. 571751i. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)