https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14003004![Andrew Mackay. Stipple engraving by J. Heath after A. Robertson.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djcmh6ODM1ZmgtaW1hZ2UuanBn.jpg)
![Andrew Mackay. Stipple engraving by J. Heath after A. Robertson.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djcmh6ODM1ZmgtaW1hZ2UuanBn.jpg)
Andrew Mackay. Stipple engraving by J. Heath after A. Robertson.
Andrew Mackay. Stipple engraving by J. Heath after A. Robertson.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use