An itinerant medicine vendor performing on stage with several assistants, selling their wares to a small audience in Rome. Etching by W. Unger after D. Helmbreker.

Licence: Public Domain Mark

Credit: An itinerant medicine vendor performing on stage with several assistants, selling their wares to a small audience in Rome. Etching by W. Unger after D. Helmbreker. Wellcome Collection. Source: Wellcome Collection.