Crebbin, J. C. "Compound Locomotives & Their Work"(PDF). Kent and East Sussex Railway Virtual Mutual Improvement Classroom. Junior Engineering Society. Archived(PDF) from the original on 21 July 2015. Retrieved 17 July 2015.
Crebbin, J. C. "Compound Locomotives & Their Work"(PDF). Kent and East Sussex Railway Virtual Mutual Improvement Classroom. Junior Engineering Society. Archived(PDF) from the original on 21 July 2015. Retrieved 17 July 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.