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The wireless transmission room at Croydon Aerodrome, south London, 1928, (1935). 'A view of a wireless transmission room, whence contacts can be made with pilots in the air as to direction and weather conditions'. From "The Silver Jubilee Book - The Story of 25 Eventful Years in Pictures". [Odhams Press Ltd., London, 1935] (KEYSTONE/HERITAGE IMAGES/The Print Collector)