The Dd type was an evolution of the Dm class. However unlike the Dm class which used components of the old E Class tender engines, the Dd class components were all new.[1] All were built at the Midland Railway Workshops entering service between April and November 1946. They were built to haul suburban passenger services in Perth, although they did on occasions work to Bunbury on the South Western and Merredin on the Eastern lines.[2][3][4]
The first were withdrawn in 1969, with the remainder in 1970/71 following the entry into service of the ADK/ADB class diesel multiple units.[2][3]
Dd596 was also purchased by the Australian Railway Historical Society in April 1974 and was placed on display at the Western Australian Rail Transport Museum. In July 1990 it was placed on display at the Gosnells Railway Market.[5][6][8]
^ abTurner, Jim (1997). Australian Steam Locomotives 1896-1958. Kenthurst: Kangaroo Press. p. 141. ISBN 086417778X.
^ abOberg, Leon (2010). Locomotives of Australia 1850s-2010. Dural: Rosenberg Publishing. pp. 230–231. ISBN 9781921719011.
^Clark, Peter (2012). The Australian Locomotive Guide. Dural: Rosenberg Publishing. p. 46. ISBN 9781922013682.
^ abWhiteford, David; De Bruin, Charles; Watson, Lindsay; Watson, Neville (1983). Western Australian Preserved Locomotives. Elizabeth: Railmac Publications. p. 7. ISBN 0 949817 19 8.
Gunzburg, Adrian (1968). WAGR Locomotives 1940–1968. Perth: Australian Railway Historical Society (Western Australian Division). pp. 13–15, 47. OCLC219836193.
Gunzburg, Adrian (1984). A History of WAGR Steam Locomotives. Perth: Australian Railway Historical Society (Western Australian Division). ISBN 0959969039.