He provided a handwritten draft of Memoirs of Many in One, and it was bought jointly by the State Library of New South Wales and the National Library of Australia.
[1] White was notoriously opposed to inquiries into writers' creative processes, such as looking at draft manuscripts, and he referred to academics who pursued such inquiries as "ferrets".
So, as State Library curator Paul Bunton pointed out, the manuscript he gave may well have been seeded specially for the ferrets, and therefore be an unreliable guide to his usual way of working.
For many years it was thought this manuscript was the only one by White to have been preserved, since his will directed that all his papers were to be destroyed when he died.
Barbara Mobbs, his long-time literary agent, and then literary executor, had ignored his instructions and preserved most of his papers (subsequently acquired by the National Library).