Crebbin, J. C. «Compound Locomotives & Their Work». Kent and East Sussex Railway Virtual Mutual Improvement Classroom. Junior Engineering Society. Archivado desde el original el 21 de julio de 2015. Consultado el 17 de julio de 2015.
Crebbin, J. C. «Compound Locomotives & Their Work». Kent and East Sussex Railway Virtual Mutual Improvement Classroom. Junior Engineering Society. Archivado desde el original el 21 de julio de 2015. Consultado el 17 de julio de 2015.
Reed, P.J.T. (February 1953). White, D.E., ed. The Locomotives of the Great Western Railway, part two: Broad Gauge. Kenilworth: RCTS. p. B47. ISBN0-901115-32-0. OCLC650490992.