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

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.

Documents collected and collated by Anne McCosker and used as source material for her book Masked Eden.

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.

Handwritten and typed drafts of Anne McCosker's poems and short stories, often with heavy editing and annotations, and notes and drafts for the book Lieutenant Martin's Letters. Many of the drafts of poems and stories are in notebooks. The series also contains a typed draft of a story titled 'Pacific Pot Pourri: Concerning One Klearwatgear', written during World War 2 by Winifred Martin.