Illustration depicting the use of Mangin's optical telegraph. Dated 19th Century

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archival, archive, century, historical, history, illustration, illustrationillustratedmanginopticaloptical, mangin, optical, telegraph, telegraphtelegraphcommunicationcommunicatefrancefrenchparis19th