Inherited minerals

Came across a letter that was sent that my mom doesn’t remember researching.

She inherited mineral rights in Smith County, but apparently the lawyer sent her a mineral and royalty deed that they found after they sent out the other ones. She never got this one transferred into her name. How would I go about finding out info on it? I’ve been on Texas file, Shelby county cad, pianola county cad (because it says panola in description).

It says county of Shelby

Well/lease: fogleman/clydelle MRS (A-1)

Section/township/range: A-423 A McFadden sir panola co-43.14%, 703.385AC

OPERATOR: Brock oil and gas corp