The transmission of these traditions is oral, ceremonial and geographic. Knowledge is held in song cycles that follow the routes of ancestral beings across country, in designs, in dance, and in the land itself, and it is transferred in stages, over a lifetime, to people entitled to receive it. It was never a corpus awaiting collection.
The outside record begins in the nineteenth century, produced during dispossession, and it carries every problem that implies. Early collectors recorded what they were shown or what they could obtain, sometimes from people who were not entitled to give it, and published it without restriction into a world that had no idea what it was reading. Some of that published material is now the subject of active requests for return and for restriction, and some has been withdrawn from circulation at the request of the communities concerned.
Twentieth-century anthropology produced much better work and repeated some of the same errors, including the publication of restricted men's material in books that women of the relevant communities were then not permitted to open.
Since the later twentieth century the position has changed substantially. Communities control access to their own material, keeping places and archives operate under community protocols, and Indigenous scholars and knowledge holders determine what is published.
The atlas records that the traditions exist and how they are organised, and defers on everything held.