Transmitting valves at Marconi Station in Carnarvon, Gwynedd, 1926. From An Outline of Christianity, The Story of Our Civilisation, volume 4: Christianity and Modern Thought, edited by RG Parsons and AS Peake, published by the Waverley Book Club (London, 1926).
Pixel Dimensions (W x H) : 4191x4171
File Size : 51,213kb