'Widely regarded as one of Australia’s worst prime ministers, William—‘Billy’— McMahon laboured in his retirement to produce an autobiography that would put forward the story of his life and laudable career as he saw it. But McMahon’s inability to reconcile that story with the archive of documents he had compiled, and the stories that his colleagues told in their own books, ensured that progress on his autobiography would be incomplete by the time of his death in 1988. This essay traces McMahon’s efforts to assert control of his story, via his archive and work with ghost-writers and publishers on his autobiography, and the effect that this had on the biography of McMahon that I published in 2018.1 I reflect on the two stories that my biography tells—of McMahon’s life, as I have understood it, and McMahon’s attempts to understand and portray his life—and the effect of each on the ontological stability and certainty of the other.' (Introduction)