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.

Letters by Stan McCosker to Walford King, mostly relating to re-establishing the Matala Plantation after the war. The file also contains two letters from the Department of External Territories to Marjorie McCosker granting her permission to return to the Territory of Papua New Guinea.

Letters by Stan McCosker while on military service in New Guinea and North Queensland.

Statements, personal accounts, copies of military records, memoirs and newpaper cuttings relating to the Japanese invasion and occupation of Rabaul.

Documents relating to the Japanese military invasion of New Britain. Includes a letter from Stan to Marjorie McCosker dated 17 December 1941; correspondence between Marjorie and Francie King; a statement by A.J. Gaskin, S. McCosker and T.H. Targett concerning the military and civilian administration of Rabaul up to 22 January 1942; a copy of a statement by Mr McGowan about the Japanese invasion; a handwritten draft of a short story titled 'Escape' by Robin McCosker; and two newspaper cuttings.

Letters from Stan to Marjorie McCosker in 1941 after she was evacuated from New Guinea to Australia, a letter from Stan McCosker to Walford King, and a letter from Marjorie to Francie King. The file also contains instructions dated 30 May 1940 from the Commanding Officer of the New Guinea Volunteer Rifles listing the personnel to escort enemy internees from Rabaul to Sydney. Stan McCosker is named as one of the seven members of the escort.

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.

Documents relating to the eruption of volcanoes on Vulcan Island and Matupi, near Rabaul, in 1937. Documents include the 4 June 1937 issue of The Rabaul Times, three letters from around that time, a typed account of the events, and two published articles.

Letters, newspaper cuttings and an extract from The Rabaul Times. Most of the file comprises letters written in New Guinea by Marjorie McCosker to her friend in Australia, Madge White, addressed in the letters as Whitey.

Assorted notes, newspaper cuttings and other documents relating to the publication and launch of Masked Eden.