Eldaxon's Collected Folklore was an anthology of ancient Talaxian folktales. The second edition of the book was published in 5012 of the New Calendar.
The first recorded usages of the word vaadwaur in Talaxian literature were in this book, specifically in the folktales "The Demon with the Golden Voice", "The Tale of the Deadly Stranger", "The Tale of the Boy Who Lost His Head", and "The Tale of the Bloody Hand".
A copy of this book was contained in Neelix's personal database. He referenced the work in 2376 after the USS Voyager discovered and revived a group of Vaadwaur survivors. (VOY: "Dragon's Teeth")