First American edition, printed in Great Britain and the Netherlands. Dated 1973. Colour plates and descriptions; part of a series by Macmillian and Co. of "Railways of the world in color"
Oswald Stevens "Ossie" Nock was a British railway signal engineer and senior manager at the Westinghouse company. He is best known for his prodigious output of publications on railway subjects, including over 100 books, as well as a large number of more technical works on locomotive performance.
More compendium than book, but everything presented with wonderful illustrations and surprisingly detailed entries. Not much in the way of cohesive text but very neat for train fans.