Britain's first main line diesel-electric locomotives, 1958.
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Locomotive No 10000 'The Royal Scot' and No 10001 doublehead a pasenger train north of Elvanfoot, Scotland. Photograph by Bishop Eric Treacy. Treacy (1907-1978) was often allowed special acces to many areas denied to other railway photographers. He also befriended many of the footplate crews, occasionally persuading them to create special smoke effects for the camera.