My g-g-grandfather, Michael Cortez, immigrated to the United States from Chile in 1850. He settled in California during the Gold Rush, and mined there for many years. His census records show that he was naturalized as a US citizen 1 August 1892 in the Superior Court of Sierra County in California. He died 26 June 1912 in Sierra County, California. I would love to get a copy of his naturalization record, but have no idea where to find it. Does anyone know where these records are kept? Much thanks!