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 and the introduction of the 1930 hybrids,
nicknamed the 'Dukedogs'. Nock's trademark detailed text, accompanied by
copious photographs and locomotive layout diagrams, includes run logs
and his descriptions of footplate trips including a notable one made on
City of Truro.