Saint Elizabeth of Hungary Tending the Sick in Marburg, Death of St Elizabeth, inner right wing of an altarpiece made for… https://www.rawpixel.com/image/13744083/image-face-person-artFree Image from public domain licenseDie Gewinnung des Diphtherieserums aus Pferdeblut im Behringwerk zu Marburg. Four men in white smocks extract blood from two… https://www.rawpixel.com/image/8786618/image-art-vintage-booksFree Image from public domain licenseMarburg, Germany: panorama with crest. Reproduction of a line engraving by K. Merian. https://www.rawpixel.com/image/13995924/image-paper-horse-cartoonFree Image from public domain license