Letters to Anne McCosker from David Behrens.

Correspondence with and relating to Jan Roberts.

Correspondence with Trinity Press.

Letters from Stan McCosker to the Kokopo Sports Club relating to the auditing of the club's accounts.

Handwritten letters to family from Frederick (Fred) William Scott Martin during his war service in World War One. The letters in this file begin while Martin was in training in Australia and cover his service at Gallipoli and his transfer to the United Kingdom after falling ill.

Handwritten letters to family from Frederick (Fred) William Scott Martin during his war service in World War One. The correspondence in this file begins while Martin was convalescing in Weymouth and ends with postcards sent from France.

Handwritten letters to family from Frederick (Fred) William Scott Martin during his war service in World War One. The correspondence in this file begins while Martin was in the trenches at the Western Front. His final letter is dated 31 August 1917. Martin was killed in action in Belgium on 20 September 1917. The final documents in this folder are an article about Martin published in The Humpybong Halcyon newspaper on 20 October 1917, a letter from the Queensland Department of Public Instruction to Martin's father, dated 6 December 1917, and a copy of a Commonwealth record detailing the actions that led to Martin being awarded the Military Medal.

Correspondence, a statement of claim and associated documents and a copy of a judgement in the Supreme Court of the Territory of Papua New Guinea in the case of Stanley McCosker and Henry Walford King (plaintiffs) and Gustav Thomas Kuster (defendant). The Court ruled in favour of the plaintiffs and an application by the defendant Kuster for leave to appeal to the High Court of Australia was refused.

Handwritten draft of a talk delievered by Marjorie McCosker to the Business Professional Women's Club (Brisbane).

Papers relating to the evacuation of Marjorie McCosker from New Guinea to Brisbane in 1941. Documents include a permit dated 27 May 1941 issued to Marjorie, allowing her to leave and return to the Territory of New Guinea with two children; inventories of goods and personal effects shipped; and an offer of employment to Marjorie from St Margaret's School, Brisbane.