Automatic telephone set, with central battery and interior buzzer. Model made of black Bakelite. This is the standard model installed by Telefónica for its subscribers.

Portable telephone equipment with local battery and magneto call. Used by the company's guards, it was also used by RENFE personnel to communicate incidents. The box is made of wood, with the corners reinforced with ...

A medium-power radio frequency transmitter that was used by the US military during World War II. It was responsible for transmitting amplitude-modulated or continuous-wave signals over a range of more than 10 km/h. It was used by the...

At the door of the Hermosilla power station. Mr. Sosthenes Behn, greeting the Minister of the Interior.

Madrid. White Truck.

Northern station call shops.

Stamp of the International Telephone and Telegraph Corporation.

Luncheon given by Colonel Sosthenes Behn and Mr. Hernand Behn, Chairman of the Board and President respectively of the International Telephone & Telegraph Corp. in honour of the officials of the National Company of Spain, Messrs....

BUILDINGS : CENTRAL DE SEGOVIA

The Alhambra seen from San Nicolás.

The Alhambra seen from San Nicolás.

Courtyard of Los Arrayanes. Granada.

Granada. The vega seen from the tower of La Vela.

Granada. The sierra and the vega seen from the tower of La Vela.

View of the Sierra Nevada from near Granada.

Granada. Sierra Nevada seen from the roof of the C.T.N.E. building.

Granada. General view of the Alhambra.

Granada. The Alhambra.

Grenada.

Automatic telephone dialer.