This collection is comprised of correspondence by Dick, Elsie and Lindsay Roughsey; the manuscripts of Dick Roughsey; the manuscripts of Percy Trezise; and 20 original artworks by Goobalathaldin (Dick Roughsey) and Percy Trezise, many of which were proposed illustrations for The rainbow serpent (1979). It includes some explanatory notes by Fedora Fisher.

This collection has typescript and handwritten drafts, notes and research material relating to published works and also to a wide range of literary projects mostly undertaken during the later part of Hill's writing career, from 1945 onwards. These unpublished works cover a variety of genres: novels, plays, descriptive writing and scripts for radio, television and film. Included are drafts and research material related to 'Johnnie Wisecap', 'The Coast of the Holy Ghost', 'Zodiac Road / Blanked over the moon', 'Women of Australia', 'Grand Kangaroo', 'Mother of Pearl'. There is material on the life of Daisy Bates, and plans for a film based on her life; personal correspondence, and two complete unpublished novels.

There are 3,156 photographs, some prints, some negatives, reflecting very large collection of photographs taken by Hill during her many long tours of outback Australia, from the early 1930s and cover all aspects of Northern, Western and outback Australia: flora and fauna, scenery, missions, homestead life, coastal scenes and shipping, traditional industries such as fishing, droving, pearling and sugar farming, mining, camel transport, dwellings, cemeteries, and public buildings. There is pictorial material relating to the life and customs of Aboriginal Australians in all areas of Australia.