Putney Heath telegraph system
E1823815
UNEXPLORED
The Putney Heath telegraph system was part of an early optical semaphore network used in Britain to relay military and governmental messages across long distances before the advent of electric telegraphy.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Putney Heath telegraph system canonical | 1 |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.