O.S. Nock continues his account of the GWR 4-4-0s with a further look at G.J. Churchward and his programme of modernisation and standardisation, particularly in boiler design, and his introduction of the 'County' class - the last of the new GWR designs. He goes on to describe the impact of two world wars, the implications for the 4-4-0 classes post-Grouping, with particular regard to the Cambrian section, the start of withdrawals in the 1920s ...
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