https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14001209![John Brown. Photograph by Moffat.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djcWhrdWRhbngtaW1hZ2UuanBn.jpg)
![John Brown. Photograph by Moffat.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djcWhrdWRhbngtaW1hZ2UuanBn.jpg)
John Brown. Photograph by Moffat.
John Brown. Photograph by Moffat.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use