Literary notes and drafts of Anne McCosker's poems and stories, personal correspondence, research papers and correspondence relating to the history of Australian New Guinea before and after World War Two, World War One letters from Lieutenant F.W.S. (Fred) Martin, and photographs relating to Anne McCosker's family history in Australian New Guinea. Many of the letters, research documents and photographs relating to New Guinea were used as source material for Anne McCosker's book Masked Eden: A History of the Australians in New Guinea.

Notebooks of handwritten drafts of poems published in Leaves.

Notebooks of handwritten drafts of poems published in Witch Doctor.

Journal of first drafts of short stories, mostly from the early 1980s.

Two typed drafts of 'Each Man is to Fend for Himself: A Tragedy in Two Acts'. One of the drafts, dated 2008, is annotated and accompanied by an English translation of an account of the final Montevideo Maru voyage, written in Japanese by Hisashi Noma. The second draft, containing no annotations, is dated 2010. This file also contains a typed draft of a poem entitled 'Time?', with a handwritten annotation indicating the poem was written in the mid 1960s.

Letters and cards received or written by Anne McCosker and letters collected by her and used as source material for her books about Lieutenant Frederick Martin and the history of Australians in the colonial territory of New Guinea.

Letters to Anne McCosker from Dr A.M. (Allan) Healy.

Letters to Anne McCosker from Geoff Melrose, and letters from Richard Buckley to Mrs Clifford-Bassett and Pat Johnson in which one of the Melrose letters is referenced.

Correspondence and notes relating to debates surrounding the loss of Australian prisoners-of-war in the sinking of the SS Montevideo Maru in June 1942.

Letters from Noel Barry to Marjorie and Robin McCosker.