The appearance of Richard Walsh is notable because it established an explicit link between "Mavis" and the Sydney satirical magazine "Oz", which at that time was the subject of a highly publicized censorship controversy. The three "Oz" co-editors—Walsh, Richard Neville and Martin Sharp – had recently been charged with producing an obscene publication, relating to satirical articles and photographs published in the magazine's early editions. In September 1964 the trio was found guilty of the obscenity charges, and there was a major public outcry when presiding magistrate Gerald Locke SM sentenced Walsh and Neville to six months' imprisonment with hard labour. When "Mavis" premiered the "Oz Three" were preparing their appeal against the verdict (which was ultimately quashed).