https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13989625![Barberton, South Africa: the Transvaal Share and Claim Exchange. Woodburytype, 1888, after a photograph by Robert Harris.](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djanFreWgybmotaW1hZ2UuanBn.jpg)
![Barberton, South Africa: the Transvaal Share and Claim Exchange. Woodburytype, 1888, after a photograph by Robert Harris.](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djanFreWgybmotaW1hZ2UuanBn.jpg)
Barberton, South Africa: the Transvaal Share and Claim Exchange. Woodburytype, 1888, after a photograph by Robert Harris.
Barberton, South Africa: the Transvaal Share and Claim Exchange. Woodburytype, 1888, after a photograph by Robert Harris.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use