Pietro Andrea Mattioli. Line engraving by C. Faucci after L. Feliciati. https://www.rawpixel.com/image/14017105/pietro-andrea-mattioli-line-engraving-faucci-after-feliciatiFree Image from public domain licenseJames Sheridan Muspratt. Stipple engraving by W. Holl after A. Claudet. https://www.rawpixel.com/image/14020747/james-sheridan-muspratt-stipple-engraving-holl-after-claudetFree Image from public domain licensePortret in profiel van de Romeinse keizer Constantijn de Grote (1652 - 1690) by Abraham Bloteling https://www.rawpixel.com/image/13775857/image-paper-face-personFree Image from public domain licenseInstitutionum pharmaceuticarum, libri quinque quibus accedunt de materia medica, libri tres. Omnibus succedit officina… https://www.rawpixel.com/image/13997122/image-face-person-artFree Image from public domain license