Original vintage educational poster entitled British Railways The Power featuring colourful images with descriptions about trains and how the engine works and what different jobs are carried out by railway workers, including - Drivers and firemen start their careers as cleaners / The maintenance of the boiler is one of the jobs done in the running shed / Steam is the main source of power British Railways have 19,000 steam engines carrying their own coal and water - with a diagram showing how the piston works below a cut out image showing the workings of a steam engine train and different class models of trains below marked between images and descriptions - Diesel Electric Shunter Oil engines are in use but they depend on imported oil / Electric engines haul both passenger and freight trains. World copyright reserved November 1952 Educational Productions Ltd visual aids 17 Denbigh Street London SW1 Printed in Great Britain Sheet 3. Good condition, tape mark at bottom right. Country of issue: UK, designer: Unknown, size (cm): 50x75.5, year of printing: 1952.