Tabor, F.J. (February 1956). White, D.E.. ed. The Locomotives of the Great Western Railway, part four: Six-wheeled Tender Engines. Kenilworth: RCTS
Sterndale, A.C.; Parker, L.T.; Smith, C.; Reed, P.J.T.; Tabor, F.J.; Davies, F.K.; Allcock, N.J.; Lucking, J.H. (May 1974). White, D.E.. ed. The Locomotives of the Great Western Railway, part twelve: A Chronological and Statistical Survey. Kenilworth: RCTS
Davies, F.K.; White, D.E. (December 1983). White, D.E.. ed. The Locomotives of the Great Western Railway, part thirteen: Preservation and Supplementary Information. RCTS. ISBN0-901115-60-6
Davies, Ken (April 1993). The Locomotives of the Great Western Railway, part fourteen: Names and their Origins - Railmotor Services - War Service - The Complete Preservation Story. Lincoln: RCTS. ISBN0-901115-75-4
Pigott, Nick (2 July 2014). “The Engines that won the War”. The Railway Magazine (Horncastle, Lincs, UK: Mortons Media) 160 (1,360). ISSN0033-8923.