112pp. Black cloth-covered boards, gilt titles on spine. Lightly bumped top front corner. Internally neat, clean, bright and tight. Dust jacket has been protected with self-adhesive plastic, price unclipped. 4to. Part of the OPCs popular 'Power of...' series in which the railway photographer/author turns his attention to this important but overlooked class as he records the development and operational history of the class from their origins in the early 1950s through to their final withdrawal from mainline service in the late 1960s and onto preservation.
