The coordinates listed are for parking. From where you park, go approximately 200 feet southeast into a grove of trees. The prize awaits you at the base of a tree on your left toward the back of the grove. If you'd rather have the exact coordinates, read the hint. Container is a regular sized lock and lock.
Since this is a letterbox, you will find a stamp and a notebook inside, please make sure they both stay with the cache. I'm sure a lot of people here will be conflicted in their feelings about the stamp, especially some Oklahoma fans that will remain nameless!
Congratulations to Fishercacher on the FTF!