If you qualify for a Pioneer Certificate (that is, you can document your ancestor's arrival in California prior to May 10, 1869), please complete the Appication for California Pioneer Certificate, print it, and send to Root Cellar with your appropriate fee ($5 for members, $10 for non-members), along with this requested verification material.
Pioneer Certificate, Root Cellar - Sacramento Genealogical Society, PO Box 265, Citrus Heights, CA 95611-0265