https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13977717![Thomas Madden Stone. Photograph by Ernest Edwards.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9zdGF0aWMvZmlsZXMvd2Vic2l0ZS8yMDI0LTAyL3djY3VjbjN1NXctaW1hZ2UuanBn.jpg)
![Thomas Madden Stone. Photograph by Ernest Edwards.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9zdGF0aWMvZmlsZXMvd2Vic2l0ZS8yMDI0LTAyL3djY3VjbjN1NXctaW1hZ2UuanBn.jpg)
Thomas Madden Stone. Photograph by Ernest Edwards.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use