One of a series showing the secrets behind simple magic tricks using telephone books and tableware.
Quickly edited sequence of different methods of communicating information.
A look at the history of the telephone and the improvements which have been made.
An introduction to the very latest in labour saving devices on display in Earls Court.
Strongman The Great Challard tears a telephone directory in half and bends steel bars.
Strongman act by Travis - various impressive stunts are performed.
Fascinating glimpse inside London's Overseas Telephone Exchange - we get to eavesdrop on a few calls to foreign lands.