This was posted by Chris in a different Paddleducks forum, but not everyone in this forum may subscribe to that one: photos from Echuca Heritage Festival:
http://chrisriverpix.fotopic.net/ He has a range of views of portable engines, traction engines and steamrollers, plus several of paddlesteamers.
Historically, Australian paddlesteamers tended to use the same boilers and engines as were built for stationary and road applications. Marshall (of Gainsborough?, UK) had a strong presence. Now, restorations and new builds rely on these sources.
Regards,
Roderick B Smith
Rail News Victoria Editor