Licence: Public Domain Mark
Credit: Franz Herrmann Czech, with deaf children. Engraving, 1836. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0001432/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Franz Herrmann Czech, with deaf children. Engraving, 1836. Wellcome Collection. Source: Wellcome Collection.