Licence: Public Domain Mark
Credit: Two men, one of them smoking a pipe. Wood-engraving. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0019138/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Two men, one of them smoking a pipe. Wood-engraving. Wellcome Collection. Source: Wellcome Collection.