https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13986304![D.N. Knox. Photograph by Lafayette Ltd.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djZ2Y3dXd1dnYtaW1hZ2UuanBn.jpg)
![D.N. Knox. Photograph by Lafayette Ltd.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djZ2Y3dXd1dnYtaW1hZ2UuanBn.jpg)
D.N. Knox. Photograph by Lafayette Ltd.
D.N. Knox. Photograph by Lafayette Ltd.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use