https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13986194
The back of a man suffering from syphilis, showing a rash of papular and papulopustular syphiloderm. Colour lithograph after Mracek , ca. 1905.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use