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 written to family by Frederick (Fred) William Scott Martin while Martin was serving with the Australian Imperial Force in Australia, Egypt, Gallipoli, the United Kingdom and finally the Western Front from 1915 to 1917. Martin was Anne McCosker's uncle. The letters were published by McCosker in Lieutenant Martin's Letters (2013).

Photographic prints atached to bound sheets of paper with a cover sheet stating, 'Early folders of photos for use in Masked Eden. Some used, some not.' The photographs are numbered and the folder is accompanied by a corresponding list of captions. The photographs show members of the McCosker family and their New Guinea associates, local people who were probably plantation employees or their relations, and scenes from locations in New Guinea where the McCoskers were based. A second set of photographic prints, attached to loose sheets of cardboard, feature similar subjects. The file contains a photograph album (28 pages : 98 b&w photographs ; 13 x 18 x 2 cm) attributed to Winifred Francis Martin, which contains photographic prints from the mid-1930s of scenes and Indigenous people from the northern islands of New Guinea. The file also contains three photographs; two of the photographs show Australian military personnel returning to Australia in 1918 aboard the Euripides; the third photograph, taken in the 1950s, is of Annie Scott, who was aboard the Euripides during the 1918 voyage. The notes on the reverse of the photograph of Scott reference the monograph Homeward on H.M.T. A14 March 1918, compiled by the passengers during the voyage.

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.

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.

Photographic prints, postcards and some photographic negatives relating to the history of European-Australians involved with the plantation economy of Australian New Guinea. The series include images of Anne McCosker's family and their expatriate associates, local people participating in ceremonial performances, engaged in plantation labour or posing in portrait or group shots, and views of various locations in New Britain, New Ireland and other northern islands of New Guinea where the McCosker family was based. The majority of the photographs were taken in the 1920s, 1930s and the postwar 1940s, and many are captioned. Some were published in Anne McCosker's book, Masked Eden.

There are approximately 1243 b&w photographs, 53 b&w photo postcards and 12 negatives in this series.

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.

Photographic prints and postcards showing people, plantation life and scenery in the Australian Territory of New Guinea. Locations include Maron Plantation, Matala Plantation, Gumyitke Creek and Rabaul. Many photographs feature local people and European-Australians.

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.

Objects collected in the course of research for the books Masked Eden and Lieutenant Martin's Letters.