Hippocrates. Line engraving by P. Pontius, 1638, after P. P. Rubens. https://www.rawpixel.com/image/13953316/hippocrates-line-engraving-pontius-1638-after-rubensFree Image from public domain licenseOfficers and other Civic Guardsmen of the XIX District of Amsterdam, under the command of Captain Cornelis Bicker and… https://www.rawpixel.com/image/13741673/image-face-person-artFree Image from public domain licenseBust of Gaspar de Crayer (1585-1669) (c. 1638 - c. 1640) by Lucas Faydherbe https://www.rawpixel.com/image/13747292/bust-gaspar-crayer-1585-1669-c-1638-1640-lucas-faydherbeFree Image from public domain license