Licence: Public Domain Mark
Credit: Francis Graham Crookshank. Photograph by J. Russell & Sons, 1934. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0026228/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Francis Graham Crookshank. Photograph by J. Russell & Sons, 1934. Wellcome Collection. Source: Wellcome Collection.