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Dar es Salaam Optische Telegrafie
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Picture postcard; photo postcard, group photo of African mercenaries (Askari) of a heliograph division of the German Schutztruppe in Dar es Salaam/German East Africa, used
Item · 1908
Part of Post and Telecommunications Museum Foundation

Picture postcard 'Unsere Kolonien. Series VI. 5th; Optical telegraphy with a heliograph; Heliograph department in Dar-es-Salam;nSender: Neue Photographische Gesellschaft AG (NPG) [publisher];nInscription: Verlag den Neuen Photographischen Gesellschaft A.G. Steglitz-Berlin.; reverse