The Garratt D60 was a rare sight in Sutherland. I seem to remember they had a habit of bending the tracks on some of the hairier sections of the Illawarra Line. Also, they were only just coming into service in the 1950s and 1955 was my last year by the main line between Jannali and Sutherland. There was an Australian connection with the concept, which I hadn’t realised: The Garratt Locomotive. The Garratts were the largest and most powerful steam locomotives ever to run on any railway in Australia.
Pics linked to source.