During their time together, Harrington recorded Cooper talking and singing in Obispeño on wax cylinders. From her recollections, Rosario described singers and dancers she had known in her youth, and what they had passed on to her. Rosario sang 21 songs for Harrington, including the coyote and skunk songs. The swordfish dance she described included a costumed dancer who had a stick in each hand to hit together. The wax cylinder recordings were transferred to tape during the Library of Congress' Federal Cylinder Project and can be accessed in the Smithsonian Institution archives. Legacy Without the knowledge of Rosario Cooper and the collaboration of J.P. Harrington, the Obispeño language would have gone undocumented. Because of Cooper's collaboration and Harrington extensive field notes, a written record survives that modern students of the language can use as a resource. Cooper's legacy has also provided guidance and knowledge for her family and the yak titʸu titʸu yak tiłhini peoples, who have been able to revitalize the dances and songs described and sung by Cooper. The Northern Chumash Tribe partnered with California Polytechnic State University in San Luis Obispo to work together and honor the tribe by using yak titʸu titʸu yak tiłhini village names for the university's new residential community called yakʔitʸutʸu, which opened in fall of 2018. See also List of last known speakers of languages External links Rosario Cooper's family tree Archive of J.P. Harrington's fieldwork at the Smithsonian Institution More information on Cal Poly's yakʔitʸutʸu residential community References Chumash people Chumashan languages Last known speakers of a Native American language 1845 births 1917 deaths 19th-century Native American women 20th-century Native American women 20th-century Native Americans People from San Luis Obispo County, California