Surgeon Thomas Heagle Parke, army medical staff. Doctor with Stanley's expedition to Africa. Photograph taken from the American Testimonial Banquet, London, May 30 1890.

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Surgeon Thomas Heagle Parke, army medical staff. Doctor with Stanley's expedition to Africa. Photograph taken from the American Testimonial Banquet, London, May 30 1890. Wellcome Collection. Source: Wellcome Collection.