Barcelona - Zaragoza line in Candasnos (Huesca). Two aspects of the line as it crosses the village of Candasnos.

Barcelona - Zaragoza line in Valls (Tarragona).

Automatic telephone with central battery connection and interior ringing. This telephone was used by King Alfonso XIII, among other occasions, for the inauguration of the automatic service in Madrid, on 29 December 1926, as well as for the inauguration of the Spain-Cuba telephone communication in 1928.

Barcelona - Zaragoza line in Peñalba (Huesca).

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LOTTERY IN GRAN VÍA BUILDING

Standard Electrica's manual and local battery subscriber switchboard. It is equipped with 3 exterior lines and 10 interior lines

Madrid-Valencia line. One of the lorries in charge of delivering poles in Puerto de Contreras.

Aran Valley. After Salardú and Tredos the line with a single circuit comes from Puerto de Bonaigua with the crosspieces covered with snow. Mr. Rivera with the Aran pawns Estrada and Anglada.

Underground telephone conduit in Madrid. Glorieta de Ruíz Jiménez (Cuatro Caminos)

Cable ducting for the automatic service in Cuatro Caminos.

Cable ducting for the automatic service in Cuatro Caminos.

Cable ducting for the automatic service in Cuatro Caminos.

Enclosing the underground duck in concrete before closing. Nicolás María Rivero Street.

Madrid. Channelling of cables from Calle de Hermosilla for the automatic service in Núñez de Balboa.

Madrid. Canalisation in Hermosilla.

In Bravo Murillo street. Operation of impregnating the ends of the pipes with a special paste before fitting the sleeves.

Underground telephone conduit. Open trench in Bravo Murillo street.

Madrid. Underground telephone conduit in the Plaza de la Cebada.

Madrid. Canalisation in Núñez de Balboa Street.