https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13958419
A scholar/apothecary mixing a concoction with a pestle and mortar and writing down the remedy; an emblem from a drug jar. Watercolour.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use