Locomotives of the Somerset & Dorset Joint Railway: A Definitive Survey, 1854–1966 Tim Hillier-Graves
The Clayton Type 1: Bo-Bo Diesel-Electric Locomotives—British Railways Class 17: Development, Design and Demise Anthony P. Sayer
The Metropolitan-Vickers: Type 2 Co-Bo Diesel-Electric Locomotives: From Design to Destruction Anthony P. Sayer
Great Western: Large Wheeled Outside Framed 4-4-0 Tender Locomotives: Atbara, Badminton, City and Flower Classes David Maidment
The North British Type 2 Bo-Bo Diesel-Electric Classes 21 & 29: Design, Development and Demise Anthony P. Sayer