They include:

The Listener-in magazine (from February 1925)
Shortwave Radio News 1936-1940
Wireless Weekly 1929
AWA Radio Guide 1926
The Institution of Engineers Australia
AWA Engineering publications
AWA Commerce publications
Marconi School of Wireless
Newsletters of the Australian DX Club 1937-1949
The Constant Voice - published by Radio Australia for its 30th anniversary 1969
Many articles about Australian shortwave radio history (by Dr Adrian Peterson, Adventist World Radio, USA)
The Lyndhurst Transmitter Site (by Robert Jones, dec)
Radio and Hobbies, Radio TV and Hobbies, Electronics Australia magazines - various issues
Amateur Radio (Wireless Institute of Australia) various issues
Newsletters and various publications of the Australian Radio DX Club (1964-2000)
Then Victorian DX Listener (newsletter of the Victorian Branch of the New Zealand DX Radio Association (1963-1964)
The First 20 Years - 1965-1985, the Development of the Australian Radio DX Club(Padula)
The History of DXing in Australia - 1920-1971 (Padula)
Internal publications of the Australian Post Office - various issues
Picture Australia
Country Fire Authority -Victoria
National Libnrary of Australia
State Library of Victoria
Shire of Melton Heritage Study
Australian Broadcasting Corporation archives
City of Boroondara library
World Radio TV Handbook - many editions from 1947 to present
Balwyn Historical Society
Australian Screen and Sound Archives
Australian War Memorial
Camberwell High School - past students' groupAuburn Central Primary School 
Robert Cochrane Free Kindergarten - Hawthorn 
Hawthorn Football Club
Listening to the Shortwave - 1945 to the present (author Jerome S. Berg, USA)The Melbourne Argus newsaper

Additional background was researched from the National Library of Australia via its digitized newspaper on-line service.