I know most of us search for Gold,Silver,Relics,Coins, but have you checked the California State controllers data base ? just go to there home page and at the bottom there is a search our database you never know. I have found hundreds for friends that never new about this. I have family that lived in Oklahoma and for some reason they have thousands of dollars worth of mineral rights in California we did not stay in touch much but i have tried to track them down to no avail. Good luck post up if u find a lost treasure lol.