ROOM 1

Version en Castellano

@ Siphon telegraphic receiver. Muirhead recorder 1906	@ Portable Morse receiver 1844	@ Hughes direct printing telegraph 1855
@ Wheatstone automatic rapid transmitter 1867	@ Switchboard: locally operated desk model L. M. Ericsson, Sweden 1884	@ Gower-Bell telephone USA 1880
@ Switchboard: locally operated wall model L. M. Ericsson, Sweden 1883-1886

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