0390006039
Aerial Telegraph. Roman signal towers. A basket containing fire was hung from an arm near the top of the tower and used to signal a message which was passed along a chain of similar towers. Liebig trade card c.1900. Chromolithograph
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- Copyright
- Irish Photo Archive
- Image Size
- 6000x4021 / 3.5MB
- Contained in galleries
- historical photos 2
