Photographic prints of people, plantation life and scenery in the Australian Territory of New Guinea. Locations include Matala Plantation, Kolopo and Rugenhafen. Some of the photographs feature members of the McCosker family and their associates. The album also contains a sequence of photographic negatives attributed to Walford King which show Chinese and Japanese fishing boats and cargo ships.

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

Letters from Marjorie McCosker, mostly to Francie. Folder also contains a travel coupon for Mrs S. McCosker for travel from Brisbane to Rabaul, date 17 July 1950.

A licence to drive a motor vehicle, issued by the Territory of Papua New Guinea to Stanley McCosker; a certificate issued by the Federal Institute of Accountants to Marjorie Martin certifying her as a Provisional Associate of the Institute; a sheet bearing the imprints of two ink stamps: the stamp of the Deutsche Kolonialgesellschaft Abteiling Bismarck Archipel, and the stamp of the New Guinea Compagnie. The original ink stamps used can be found in Series E, File 1.

Scrapbook of articles by Stan McCosker as printed in The Bulletin. The articles contain descriptions and accounts of life in New Britain. At the back of the scrapbook there are four loose newspaper cuttings from the 1960s and a typed article, 'The Epistle of Father Jerome to the Kiaps'.

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.

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

Three photographs taken at a 1949 ceremony in Rabaul for awarding of war medals. Stan McCosker is identified in one of the photographs.

Letters from Noel Barry to Marjorie and Robin McCosker.

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.