https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13995663![Sir Herbert Atkinson Barker. Pencil drawing by [W.H.].](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djbWg4YnZrMnctaW1hZ2UuanBn.jpg)
Sir Herbert Atkinson Barker. Pencil drawing by [W.H.].
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use