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Telephone hall. Trade Fair in Barcelona.
Telefónica stand with an interurban line prepared for the application of the latest advances in high-frequency carrier currents. Telephony Hall. Trade fair in Barcelona.
Santander-Bilbao line. Passage over a river.
Santander-Bilbao line in Castro-Urdiales.
Madrid-Barcelona line at the Lérida exit.
Albacete-Játiva-Alicante line. Játiva Cercanias.
Route of the Madrid-Aranjuez line over the Jarama.
Construction of an antenna at the Griñón receiver.
Aranjuez. Fountain in the Palace gardens.
Aranjuez. Royal Palace.
Aranjuez. Casa del labrador.
A street in Colmenar Viejo. Madrid.
Inauguration parchment of the automatic in Melilla.
BASIS OF THE CONTRACT WITH THE STATE FORMALISED BY PUBLIC DEED
DEED OF CONCESSION CONTRACT BY THE SPANISH STATE TO THE NATIONAL TELEPHONE COMPANY OF SPAIN