An itinerant medicine vendor selling his wares on stage to an audience while his assistant draws a tooth from a man. Etching by Diebiey, 1767.

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Credit: An itinerant medicine vendor selling his wares on stage to an audience while his assistant draws a tooth from a man. Etching by Diebiey, 1767. Credit: Wellcome Collection. Attribution 4.0 International (CC BY 4.0)