'A Vital Link in the System', BR poster, 1948-1965.
© NRM / Pictorial Collection / Science & Society Picture Library
Poster produced by British Railways (BR), detailing what goes on at the Whitemoor Marshalling Yard, 'a focal point between East England and the North'. The poster is illustrated with a schematic diagram of the marshalling yard, with pictures of the points operator, the retarder and the cut-card, with text boxes explaining what happens at the reception yard, the hump and the marshalling yard. Some facts and figures about Whitemoor Marshalling Yard appear below the main diagram. Artwork by an unknown artist.