Originally published in 1926, this is the third edition of a book aimed at 'railway employees to gain information and knowledge as to the functions of departments other than those in which they are immediately engaged' in 'an age of specialisation' (p ix). It covers all aspects of railway operation in the UK in some detail and with plenty of pictures,
diagrams and charts, including some really nice fold-out ones. It gives a fascinating insight into railway practice at the beginning of World War II.