The collection comprises papers of Walter Hamilton, who is a journalist and author of "Children of the Occupation: Japan's Untold Story". It consists research material for the book relating to mixed-race children fathered by members of the post-war Allied Occupation Force in Japan; welfare agency's program of assistance for mixed-race children in Japan; Kure City and the Japanese Naval Base at nearby Etajima; colonial policy; Japanese imperialism; Japan-Australia relations from the 1930s onwards. It includes files of International Social Service, press clippings, handwritten notes, audio-visual presentation scripts, documents from the National Archives of Australia, and other printed materials.