Full titles read: "The World's Switchboard! The Overseas Telephone Exchange, London, is the connecting link between the telephone services of the world, and one can talk through here to 95% of the world's telephone subscribers - an amazing development."
Various shots of women...
Communication technology in action - cables which span the Atlantic and a "siphon recorder".
Old radio masts are knocked to the ground in Hanover, Germany.
A telegram is typed on a teleprinter machine in London, and is printed out in Edinburgh.
A tour around the Post Office Radio Station at Rugby.
A film about psychological test been carried out to discover what jobs people are best suited too.
Leader of the Communist Party addresses the public.
A memorial service for Lenin held by British Communists.
US army equipment bolsters Laotian defences against Communist China and North Vietnam.