The 'Optophone', a reading device for the blind, invented by E. E. Fournier D'Albe: demonstrated in use by a man. Photograph, ca. 1921.
- Date:
- 1921
- Reference:
- 578120i
Licence: In copyright
Credit: The 'Optophone', a reading device for the blind, invented by E. E. Fournier D'Albe: demonstrated in use by a man. Photograph, ca. 1921. Wellcome Collection. Source: Wellcome Collection.
