Telegraph
| View Cart ⇗ | Info
An instrument to send messages by means of electricity, either at short or long distances. An instrument of this kind is frequently called the electric telegraph.
Keywords
TelegraphGalleries
Telephone and Telegraph IndustrySource
B. P. Holst The Teachers' and Pupils' Cyclopaedia (Kansas City: The Bufton Book Company, 1909)
Downloads
2400×1329, 1.3 MiB
1024×567, 177.4 KiB
640×354, 84.1 KiB
320×177, 23.6 KiB