Booklet, paper with clear vinyl-covered card covers, Operating Manual British Railways Locomotives D11-D137, issued by the Crompton Parkinson Ltd. Traction Dept. and Sulzer Bros (London), printed by Vernon Lock Ltd., London, Dec. 1961. Describes operation of Peak class locomotives. Publication no. T1469. 72pp. Operating Manual British Railways Locomotives D11-D137
Manual, paper with card covers, Operating Manual - British Railways locomotives D1520-D1861 excepting D1702-D1706, issued by Brush Electrical Engineering Co. Ltd. and Sulzer Bros. (London) Ltd., printed by Vernon Lock Ltd., 1st edition, July 1964. 95pp. Operating Manual - British Railways locomotives D 1520-D1861