New York telephone subscriber making call through operator at telephone exchange, 1883. Apparatus in picture used an Edison transmitter and a 'pony-crown' receiver (being held to subscriber's ear on right). Wood engraving. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Ann Ronan Picture Library |
Bildgröße: | 3602 px × 2905 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |