Licence: Public Domain Mark
Credit: Nathan J. Saltz. Photograph by Grubner. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0027118/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Nathan J. Saltz. Photograph by Grubner. Wellcome Collection. Source: Wellcome Collection.