Sixteen French doctors with attributes of their specialties. Colour lithograph by A. Barrère, ca. 1906. https://www.rawpixel.com/image/13960983/image-cartoon-person-artFree Image from public domain licenseFourth International Congress of Zoology , Cambridge University; nine scientists, in academic dress. Photograph by F.J.… https://www.rawpixel.com/image/14020149/photo-image-person-clothing-manFree Image from public domain license