The following lists events that happened during 1958 in Australia. Incumbents Monarch – Elizabeth II Governor-General – Sir William Slim Prime Minister – Robert Menzies Chief Justice – Sir Owen Dixon State premiers Premier of New South Wales – Joseph Cahill Premier of Queensland – Frank Nicklin Premier of South Australia – Thomas Playford IV Premier of Tasmania – Robert Cosgrove (until 26 August), then Eric Reece Premier of Victoria – Henry Bolte Premier of Western Australia – Albert Hawke State governors Governor of New South Wales – Sir Eric Woodward Governor of Queensland – Sir Henry Abel Smith (from 18 March) Governor of South Australia – Sir Robert George Governor of Tasmania – Sir Ronald Cross, 1st Baronet (until 4 June) Governor of Victoria – Sir Dallas Brooks Governor of Western Australia – Sir Charles Gairdner Events 14 January – Qantas Airways introduces a round-the-world air service from Australia to London. 20 January – The Royal Australian Naval College is moved back to Jervis Bay Territory from Flinders Naval Depot in Victoria. 28 January to 11 February – Harold Macmillan visits Australia, the first Prime Minister of the United Kingdom to do so while in office. 14 February to 7 March – Queen Elizabeth The Queen Mother visits Australia for the second time. 21 March – John McEwen replaces Arthur Fadden as federal leader of the Country Party. 24 March – The Cahill Expressway in Sydney opens, the first true freeway in Australia. 3 April – A cyclone destroys most of the town of Bowen in Queensland. 15 April – Monash University is founded in Melbourne, Victoria. 11 May – Construction of Australia's largest man-made lake, Lake Eucumbene on the Eucumbene River in the Snowy Mountains, is completed. 31 May – Henry Bolte's Liberal government is re-elected in Victoria. 19 July – The last tram service runs in Perth. 26 August – Robert Cosgrove retires as Premier of Tasmania, and is replaced by Eric Reece. 30 September – The ANZAC Day Act 1958 receives Royal Assent, making ANZAC Day (25 April) a national public holiday in Australia. 26 October – The wreckage of the Australian National Airways Avro 10 aircraft, VH-UMF Southern Cloud, is found. The aircraft had been missing since 1931. 22 November – A federal election is held. The Liberal-Country coalition led by Robert Menzies defeats H. V. Evatt's Australian Labor Party with 74 seats to 45