Katie Langloh-Parker lived at Bangate Station, on the Narran River between Lightning Ridge and Goodooga in the late 1800s and wrote a number of books about Yuwaalayaay people and their customs. You can download three of them here as pdfs: Australian Legendary Tales, More Australian Legendary Tales, Euahlayi Tribe.
Australian Legendary Tales is also available here.
An interpretation of Parker’s Yuwaalaraay Dhinawan Gumbulgaban story in the current writing system, and using our knowledge of Gamilaraay-Yuwaalaraay words and grammar, is here
Yuwaalayaay – the Language of the Narran River, Ian Sim’s material edited with John Giacon, is nguwalay/here.