
Sujet
Signal station in the Rockies, showing telephone installation and signal man using heliograph ca. 1909
Légende
Signal station in the Rockies, showing telephone installation and signal man using heliograph ca. 1909
Crédit
Photo12/Universal Images Group
Notre référence
UMG22A13_339
Licence
Droits gérés
Format disponible
22,6Mo (746,4Ko) / 28,8cm x 19,7cm / 3400 x 2328 (300dpi)