Newspaper cuttings of articles about the German plantation owner and trader Heinrich Rudolph Wahlen and the house he built on Maron Island in the Hermit Group of islands of New Guinea. The file includes a photographic print of the house.

Assorted newspaper cuttings and articles about Heinrich Wahlen and other topics relating to colonial life in New Guinea. The file also contains letters from Stan McCosker to The Bulletin.

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

Metal printing plate used to print the cover of a 1919 issue of The Australian at Weymouth, with accompanying provenance statement; a single bound volume of 1918 and 1919 issues of The Australian at Weymouth; three ink stamps from German New Guinea. Sample imprints of two of these stamps are located in Series C, Subseries 1, File 2.

Photographic prints of people, plantation life and scenery in the Australian Territory of New Guinea. Locations include Witu, Raulaurat Plantation, Kavieng (New Ireland), Ningau (Witu), Londip Plantation, and Samarai. Many of the photographs feature local people and European-Australians.

Photographic prints of plantation life, people and scenery in Australian New Guinea. Locations include Rabaul, Witu, Matala Plantation, Gumyitke Creek (New Britain), and Vunakambi Plantation. Many of the photographs feature Stan and Marjorie McCosker and local people employed as plantation labourers and house servants. The majority of the photographs were taken in the 1920s and 1930s. A small number were taken at Matala Plantation in 1948.

Photographic prints showing people, plantation life and scenery in the Australian Territory of New Guinea. Locations include Wara-Ta-Bar (New Ireland), Ningau, Matala Plantation and Witu. Many of the photographs feature local people wearing ceremonial dress, undertaking ceremonial performances and posing for the photographer. Most of the photographs were taken in the 1930s.

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.

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.