Telegraphy: symbols used in to convey various letters and numbers telegraphically. Engraving by Mutlow.
- Date:
- 1 July 1812
- Reference:
- 473427i
Licence: Public Domain Mark
Credit: Telegraphy: symbols used in to convey various letters and numbers telegraphically. Engraving by Mutlow. Wellcome Collection. Source: Wellcome Collection.
