https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14014930
A group of three 'puffers' (uninitiated alchemists) reading books, and a credulous peasant trying his luck at alchemy, his weeping wife and miserable child trying to detain him from alchemical pursuit. Engraving by F. Godefroy after J. Steen.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use