Artists and musicians active in the 17th century: twenty heads. Engraving by J.W. Cook, 1825. https://www.rawpixel.com/image/14004157/image-rosa-face-personFree Image from public domain licenseAn infant blowing bellows into a furnace; allegory of the role of N. Lefevre in chemistry. Etching by J-G. Blanchon, 18th… https://www.rawpixel.com/image/14003216/image-paper-angels-cartoonFree Image from public domain licenseAn infant blowing bellows into a furnace; allegory of the role of N. Lefevre in chemistry. Etching by J-G. Blanchon, 18th… https://www.rawpixel.com/image/14018743/image-paper-angels-cartoonFree Image from public domain license