TROVE is a project made available online by the National Library of Australia that allows website visitors to search amongst many different written medums, including digital archived newspapers. The following link takes you to a search I did of Dennis Wheatley - but you can add whatever other interest you may have to see if there are any references in the Australian newspaper archives.
http://trove.nla.gov.au/newspaper/resul ... s+wheatley
I haven't looked into it too deeply yet but an initial scan reveals a DW obituary, a few articles from the 1930s and a number of serialisations also from the 1930s (with accompanying illustrations which is a DW interest of mine).
DW in the Australian Press Archives
DW in the Australian Press Archives
Regards,
Darren.
Darren.