The Z28 class was actually an amalgamation under one class of two former classes, comprising the Baldwin built formerly J.131 class, and the Eveleigh completed J.522 class. The Baldwin J131 class were first delivered in 1887, and the locally made J522 class delivered in 1893.[1][2][3]
^Preston, Ron G (1984). Tender into Tank. Sydney: New South Wales Rail Transport Museum. pp. 11–57. ISBN0-909862-18-4.
^Grunbach, Alex (1989). A Compendium of New South Wales Steam Locomotives. Sydney: Australian Railway Historical Society, NSW Division. pp. 41–45. ISBN0-909650-27-6.
^New South Wales Railways 1855-1955. Published by Department of Railways