House Of Representatives- Lowe:
10 Dec. 1949 - 04 Jan. 1982 (Resigned)
Minister for the Navy:
17 Jul. 1951 - 09 Jul. 1954
Minister for Air:
17 Jul. 1951 - 09 Jul. 1954
Minister for Army:
17 Jul. 1951 - 09 Jul. 1954
Minister for Social Services:
09 Jul. 1954 - 28 Feb 1956
Minister for Labour:
10 Dec. 1958 - 26 Jan. 1966
Minister for Primary Industry:
11 Jan. 1956 - 10 Dec. 1958
Minister for National Service:
10 Dec. 1958 - 26 Jan. 1966
Vice-President of Executive Council:
10 Jun. 1964 - 26 Jan. 1966
Treasurer:
26 Jan. 1966 - 12 Nov. 1969
Minister for External Affairs:
renamed Foreign Affairs on 6 Nov. 1970
12 Nov. 1969 - 6 Nov. 1970
Minister for Foreign Affairs:
06 Nov. 1970 - 22 Mar. 1971
Acting Minister for Trade:
29 May 1956 - 28 Aug. 1956.
13 Oct. 1956 - 26 Nov. 1971.
The Hon. J. McEwen was absent overseas
Acting Minister in charge of the CSIRO:
23 Oct. 1956 - 01 Dec. 1971
The Rt Hon. R.G. Casey was overseas
Acting Minister for Labour & National Service:
02 Jun. 1969 - 09 Jul. 1969
The Rt Hon. H.E. Holt was overseas
Acting Attorney-General:
16 Sep. 1960 - 22 Oct. 1960
19 Apr. 1961 - 20 May 1961
The Hon. Sir Garfield Barwick was overseas
Acting Treasurer:
17 Sep. - 20 Oct. 1971
The Hon. B.M. Snedden, QC absent overseas
18 Oct. 1956 - 05 Dec. 1972
Deputy leader: Federal Parliamentary Liberal Party:
26 Jan. 1966 - 10 Mar. 1971.
Leader: Federal Parliamentary Liberal Party:
10 Mar. 1971 - 20 Dec. 1972.
Member Federal Parliamentary Liberal Party Opposition Executive:
21 Dec. 1972 - 14 Jun. 1974
Official visits in 1952
To Korea and Japan: from November to December
Official visits in 1954
To Singapore
To Malaysia
To Korea
To Japan
To Vietnam and
To the Cocos Islands
Official visits in 1957
To Pakistan
To Burma
To Vietnam and
To Singapore
Official visits in 1966
Washington for meetings of World Bank and the IMF
Official visits in 1967
Rio de Janiero for meetings of World Bank and the IMF
Visits made in 1968
Made 2 Visits to Germany & Sweden for Loan Negotiations
To London for negotiations of "Basle Agreements"
To New York for signing of "Basle Agreements"
Washington for meetings of World Bank and the IMF
Official visits in 1971
To United States and Britain: October
Official visits in 1972
To Indonesia and Malaysia: June
Leader of Australian delegation to CPA Conference, New Delhi, 1957
Chairman of the Annual Meeting, Asian Development Bank, Manila, April 1958
Member of the General Council, 1957-59.
Forty-forth Session ILO conference , Geneva, June 1960
Forty-eighth Session ILO conference, Geneva, May and June 1964
Conference of Commonwealth Finance Ministers, Montreal, 1966
Conference of Commonwealth Finance Ministers in Trinadad, 1967
Conference of Commonwealth Finance Ministers in London, 1968.
Led Australian delegation to 25th General Assembly of UN, New York, 1970
Led Australian delegation to ANZUS Conference, New York, 1970
Led Australian delegation to ECAFE Conference Bangkok, 1970
Led Australian delegation to the Foreign Ministers Conference, Djakarta, 1970
Led Australian delegation to ASPAC Conference, Wellington, 1970
Led Australian delegation to SEATO Conference, Manilla, 1970
Led Australian delegation to Troop Contributing Countries' Conference, Saigon, 1970
Meeting of Commonwealth Heads of Government, Singapore, February 1971.
NOTE: These may not all be of a political nature. They include memberships of organisations and clubs as well as appointments to positions after they retired from politics.
Management Board of Governors, Asian Development Bank, Sydney, April 1969.
He was a member of the Freemasons
In retirement McMahon worked as a financial adviser to the Bank of America, and for the BA Cash Management company.