GPO Outposts Of Empire Central AustraliaOriginal vintage advertising poster published by the GPO General Post Office for school education information to promote the extensive reach of its postal services Outposts of Empire Central Australia. Colourful illustration by the Australian artist John Vickery (1906 1983) depicting a postman wearing a sun hat in a makeshift Post Office hole in a desert reading a letter with dried out trees behind a sign reading Savings Bank of Australia in red and a