Ready to sell mineral interests

Not sure if this is the proper place to make inquiries about selling mineral rights, but my parents have 11 net mineral acres they want to sell in Grady County, OK. They have also received numerous offers to purchase their interest in another county (Canadian), however, we have never been able to confirm their ownership there. Nevertheless, they are ready to sell everything they have. I anyone is interested please reply. My thanks.

Gerald P. Sipe Jr.

Moved to Grady County.