very handy for historic mine plans unpublished reports unpublished maps Mining Tenement Reports Departmental Reports gold fields of Victoria and more worth a look just type anything your interested in the search box
link here http://geology.data.vic.gov.au/searchAssistant/reference.html?q=*:*
link here http://geology.data.vic.gov.au/searchAssistant/reference.html?q=*:*