https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13951708
A woman representing syphilis; advertising Dr Abreu's sanatorium for syphilitics in Barcelona. Colour lithograph by R. Casas, ca. 1900.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use