Menzies Cabinet First Ministry 19 12 1949 11 05 1951 class wikitable Portfolio Name colspan 2 Party Prime Minister Menzies RG style background Liberal Party Treasurer of Australia Fadden AW style background Country Party rowspan 2 Minister for Defence Harrison EJ to 24 10 1950 style background Liberal Party McBride PAM from 24 10 1950 style background Liberal Party Minister for Post war Reconstruction Harrison EJ to 17 3 1950 style background Liberal Party Minister for Labour and National Service Holt HE style background Liberal Party Minister for Immigration Holt HE style background Liberal Party Minister for Commerce and Agriculture McEwen J style background Country Party rowspan 2 Minister for External Affairs Spender PC to 26 4 1951 style background Liberal Party Casey RG from 27 4 1951 style background Liberal Party Minister for External Territories Spender PC to 26 4 1951 Casey RG from 27 4 1951 Minister for Works and Housing Casey RG Minister for Supply and Development Casey RG to 17 3 1950 Minister for National Development Casey RG from 17 3 1950 Minister in charge of Commonwealth Scientific and Industrial Research Casey RG from 23 3 1950 Minister for Supply Beale OH from 17 3 1950 Minister for the Interior McBride PAM to 24 10 1950 Harrison EJ from 24 10 1950 Minister for Health Page ECG CP Minister for Trade and Customs O Sullivan Senator N Minister for Shipping and Fuel McLeay Senator G to 17 3 1950 Minister for Fuel Shipping and Transport McLeay Senator G from 17 3 1950 Minister for Air White TW Minister for Civil Aviation White TW Postmaster General Anthony HL CP Minister for the Army Francis J Minister for the Navy Francis J Attorney General Spicer Senator JA Vice President of Executive Council Lyons EM to 7 3 1951 Menzies RG from 7 3 1951 Minister for Social Services Spooner Senator WH Minister for Repatriation Cooper Senator WJ CP Minister for Information Beale OH Minister for Transport Beale OH to 17 3 1950 Second Ministry