Audio tape preserved in the National Archives of Australia.
Thanks to Brian Larwood for obtaining this copy.
File consolidation and noise reduction by Colin Mackellar.
Photo: Australian Prime Minister Sir Robert Menzies and NASA Associate Administrator Edmond C Buckley (who is apparently holding the sheet which had been covering the model of the antenna) on Opening Day, 19th March 1965.
Photo preserved by Mike Dinn, scan by Colin Mackellar.