Helen York Rose was my husbands aunt. Her son was Jack Hollingsworth. He has also passed on. I have a personalized copy of both of Helen's books. I suggest you check with the Delaware Indian Tribal Office in Bartlesville, they might have some copies. Other than that I do not know of any other copies available for sale. Helen also wrote a second book called Journeycakes, Preacher Chief & Niece. I was given a copy of both books by Helen. I have tons of genealogy information I would be glad to share. My husbands Mother and Helen were sisters. Feel free to email me.