From the Maitland Mercury report:
Australian governor-general Quentin Bryce will officially open next year’s Maitland Mercury Hunter River Super Show as it celebrates its 150th anniversary. Maitland Show is one of the oldest shows in Australia with only Sydney and Launceston laying claim to a longer history, making it an event with enormous historical significance, Mr Ward said.
Full article by Kate Morris available at Maitland Mercury, 08 Dec, 2010.