The Australian Constitutional Convention was established by agreement between the Commonwealth and State Governments in 1972.  

Resolutions of Commonwealth and State legislatures:

 Resolution of the Senate and of the House of Representatives of the
 Commonwealth of Australia, 31 May 1973

 Resolution of the Legislative Council and Legislative Assembly of
 New South Wales, 22 and 23 March and 4 April 1972

 Resolutions of the Legislative Council of the Northern Territory, 27
 June 1973

 Resolution of the Parliament of Queensland, 20 October 1972

 Joint Resolution of the Legislative Council and the House of
 Assembly of South Australia, 26 and 27 September and 14 and 21
 August 1972

 Joint Resolution of the Legislative Council and House of Assembly
 of Tasmania, 3 October 1972

 Joint Resolution of the Legislative Council and Legislative Assembly
 of Victoria, 3 May 1972

 Joint Resolution of the Legislative Council and Legislative Assembly
 of Western Australia, 15 and 16 August 1972

The first Plenary Session was held in Sydney in September 1973.  The Convention is comprised of members of all Parliaments, together with representatives of the Australian Capital Territory, the Northern Territory and local government.  The Plenary Session of the Convention has 112 delegates and the work of the Convention continues between Plenary Sessions through the agencies of committees concsisting of approximately 15 delegates.  The functions of the Australian Constitutional Convention are to review the operations of the Australian Constitution, and develop recommendations for amendments that would have broadbased support.

In accordance with a motion of the 7 September 1973, the Executive Committee of the Convention determined that the Convention meet in Melbourne in September 1975.
 
The Commonwealth has sixteen delegates at the Convention, each State has twelve, the Northern Territory and the Australian Capital Territory had two each.  Local government was also directly
represented - three representatives attended from each State and Territory.
 
The Honourable Gordon G D Scholes was elected to the chair of the convention, Mr J C Finemore served as the Chief Executive Officer, Mr A R B McDonell was appointeed Clerk to the Convention and Mr J B Roberts, Assistant Clerk.  The Australian Government Reporting Service took the official record of Debates which was subsequently published.  

The convention received and tabled a report from each of the Standing Committees, A - D, and from the Executive Committee.  The Convention discussed a wide variety of matters including the rights of
Territorians to vote in referenda altering the Constitution, the role of local government, the subject of defamation, the retiring age for Federal Judges, family law and various anachronistic phrases and provisions in the constitution at the conclusion of the convention twenty one resolutions were adopted, the Standing Committees were reconstructed and the Executive Committee was charged with organising the next Convention.
 

Reference

Commonwealth Record, 10-16 May 1982, p 57 
Parliamentary Debates (weekly Hansards), 9 March 1972 through to 31
 May 1973, pp 764,765, 882, 883, 982, 983, 1389, 2630, 2631, 2940,
 2941
Commonwealth Government Directory, 1982, p 102

Historical agency address
The Hotel Windsor, 115 Spring Street, Melbourne

Agency controlled unregistered

The Australian Consitutional Convention, Executive Committee of the
 Convention, 3 Sep 1973 -
The Australian Constitutional Convention, Standing Committee A, 
 7 September 1973 -
The Australian Constitutional Convention, Standing Committee B, 
 7 September 1973 -
The Australian Constitutional Convention, Standing Committee C, 
 7 September 1973 -
The Australian Constitutional Convention, Standing Committee D, 
 7 September 1973 -

Subsequent agency unregistered

The Australian Constitutional Convention, Hobart, 27-29 October 1976