https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13993042![Bernard Nieuwentijdt. Line engraving by P. van Gunst after D. Valkenburg.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3dja3c3cmJ3Y3otaW1hZ2UuanBn.jpg)
![Bernard Nieuwentijdt. Line engraving by P. van Gunst after D. Valkenburg.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3dja3c3cmJ3Y3otaW1hZ2UuanBn.jpg)
Bernard Nieuwentijdt. Line engraving by P. van Gunst after D. Valkenburg.
Bernard Nieuwentijdt. Line engraving by P. van Gunst after D. Valkenburg.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use