Info on past leases of 50 years plus

Hello I’m trying to figure out how to get information on what companies have leased the sections for at least the past 50 years that I have inherited after my mom’s death. My mother passed before she was able to even understand her inheritance and to my knowledge my grandfather ( Mom’s dad) never new or just wasn’t interested in pursuing his inheritance.

Currently I have the deeds for 2 out of 3 sections after my sister passed .

Any information on who or what direction I could start with would be appreciated.

I’m in California and my mineral rights are in Carter county Oklahoma

Thank you

Tracy H

go on okcountyrecords.com. You might need to buy a one month subscription. That will show all the ogls that your mother signed. Now, if she signed a lease to a broker or a landman, they might have assigned it to their client.