Sujet
Aerial Telegraph
Légende
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
Date
20e siècle
Crédit
Photo12/Ann Ronan Picture Library
Notre référence
ARP07102_390006039
Licence
Droits gérés
Format disponible
24.1Mo (1.7Mo) / 30.0cm x 20.1cm / 3543 x 2375 (300dpi)