Zerah Colburn, a mental calculator, as a child. Engraving, 1813.
- Date:
- 7 April 1813
- Reference:
- 231i
Licence: Public Domain Mark
Credit: Zerah Colburn, a mental calculator, as a child. Engraving, 1813. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0007040/full/800%2C/0/default.jpg)