An Extraordinary Australian: Mary MacKillop: The Authorised Biography by Paul Gardiner SJ (1993) is the official, comprehensive life story of Australia's first saint. It details her challenging journey as the founder of the Sisters of St Joseph, highlighting her dedication to educating poor children, navigating severe church conflicts, and her unwavering faith. It highlights the intense, often unfair, opposition she faced from certain members of the church hierarchy, including her excommunication, while showcasing her strength, patience, and commitment to her mission. It presents a detailed, human look at a woman who became a major figure in Australian Catholic history, illustrating her devotion to God and her community. This biography is recognized for its thorough research and its role in supporting the canonization process of Saint Mary MacKillop.