Researching online this morning and I stumbled across this site, Picture Australia, may well be useful in a variety of ways. Might even add it to my sidebar?
"Looking for images of Australiana? PictureAustralia® is the place to start! Search for people, places and events in the collections of libraries, museums, galleries, archives, universities and other cultural agencies, in Australia and abroad - all at the same time. View the originals on the member agency web sites and order quality prints at your leisure."