The following volumes contain Catholic Church Records from the Old Mission Church in San Luis Obispo, California. They are being made available thanks to a partnership made between the São Jorge Genealogical Society (SJGS) and the San Luis Obispo County Genealogical Society (SLOCGS), with the help of the Huntington Library, Art Museum and Botanical Gardens. We would like to extend our thanks to the San Luis Obispo County Board of Supervisors and all of the generous donors who helped make this project possible.