British Felsol Company, Ltd. "Wigton House," 206/212, St. John Street, Clerkenwell, London, EC1.
- Date:
- [1948?]
Licence: In copyright
Credit: British Felsol Company, Ltd. "Wigton House," 206/212, St. John Street, Clerkenwell, London, EC1. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/b2864296x_0001.jp2/full/800%2C/0/default.jpg)