Double Portrait of the Artist's Daughters by Adolf von Hildebrand https://www.rawpixel.com/image/14263750/double-portrait-the-artists-daughters-adolf-von-hildebrandFree Image from public domain licenseRöntgenopname van een hand van een volwassene (1917) by Otto Hildebrand, Wilhelm Scholz, Julius Menno Wieting Pascha and… https://www.rawpixel.com/image/13759938/photo-image-hand-person-artFree Image from public domain licenseRöntgenopname van de aorta en de vertakkingen naar andere bloedvaten (1917) by Otto Hildebrand, Wilhelm Scholz, Julius Menno… https://www.rawpixel.com/image/13759456/photo-image-face-person-artFree Image from public domain licenseRöntgenopname van bloedvaten in een kinderhand (1917) by Otto Hildebrand, Wilhelm Scholz, Julius Menno Wieting Pascha and… https://www.rawpixel.com/image/13758492/photo-image-hand-plant-personFree Image from public domain licenseRöntgenopname van een kind (1917) by Otto Hildebrand, Wilhelm Scholz, Julius Menno Wieting Pascha and Joseph Friedrich… https://www.rawpixel.com/image/13758497/photo-image-person-art-public-domainFree Image from public domain licenseCarnival at Cuzco: a small Indian woman with a clyster pulls at a sheet worn by a man, who is holding an uprooted tree;… https://www.rawpixel.com/image/13979235/image-cartoon-face-personFree Image from public domain licenseJohann Philipp Eysel. Line engraving by J.G. Göbel after T. J. Hildebrand(t). https://www.rawpixel.com/image/13990733/johann-philipp-eysel-line-engraving-jg-gobel-after-hildebrandtFree Image from public domain licenseOtto Hildebrand. Photogravure after Meisenbach Riffarth & Co. https://www.rawpixel.com/image/14008186/otto-hildebrand-photogravure-after-meisenbach-riffarth-coFree Image from public domain license