Have you explored the digitised collections at State Library Victoria? A number of collections have been curated and can be explored via the Cedric link here.
Melbourne Street Directories - 1912-152
Victorian Groundwater records
Journal of commerce of Victoria and Melbourne
Victorian Historical Journal 1911-2012
Records of Coles Myer
Australasian decorator & Painter 1905-1924
Proceedings of the Royal Society of Victoria
World War 1 unit histories
The Traveller (1895-1924)
Search the online catalogue for more.