Portrait of Jean-Joseph Cassanéa de Mondonville by Maurice Quentin de Latour https://www.rawpixel.com/image/8969817/portrait-jean-joseph-cassanea-mondonville-maurice-quentin-latourFree Image from public domain licenseThe victim of a railway accident approaching the railway board's directors for compensation for his extensive injuries.… https://www.rawpixel.com/image/13969802/image-paper-cartoon-faceFree Image from public domain licenseKoch's Tuberculin : for the diagnosis of tuberculosis in cattle : tested, before being issued, by the State Control Board at… https://www.rawpixel.com/image/14002361/image-paper-book-newspaperFree Image from public domain license