https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13973731![Robert Jackson . Oil painting, ca. 1800 .](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djYnpiM3V6aHUtaW1hZ2UuanBn.jpg)
![Robert Jackson . Oil painting, ca. 1800 .](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djYnpiM3V6aHUtaW1hZ2UuanBn.jpg)
Robert Jackson . Oil painting, ca. 1800 .
Robert Jackson . Oil painting, ca. 1800 .
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use