This primary source comes from the Records of the Bureau of Land Management.
Full Citation: Diseno Del Rancho de San Pablo by Joaquin Ysidro Castro; 10/9/1852; California Land Claim Sketch Maps, ca. 1852 - ca. 1856; Records of the Bureau of Land Management, Record Group 49; National Archives at College Park, College Park, MD. [Online Version, https://www.docsteach.org/documents/document/diseno-del-rancho-de-san-pablo-by-joaquin-ysidro-castro, September 7, 2024]