What I found on internet:
"his location of a hidden cache of $50,000 in gold near Rattan, taken from a stagecoach during a robbery in the 1890s, is unusual in that directions for its recovery were given by the outlaw who committed the holdup.
After his capture, the bandit tried to bribe a deputy sheriff and reached an agreement whereby, if the deputy found the cache he would direct him to, the bandit would be released when the deputy returned with the money. The deputy conducted a search but apparently did not follow the directions correctly, for the bandit was hanged soon after his return.
An old resident of Hugh, who in 1958 recalled the proceedings, did not believe the deputy found the money, as he did not show any increased prosperity afterward and never left town. The cache consisted of $50,000 in gold taken from a stagecoach. The bandit claimed that he had removed the coins from the strong box.
These are the directions that he gave to the deputy sheriff: Go to Rattan, just north of Hugh, then to Seven Devil Mountain. From the waterhole or spring to be found there, walk up the road (trail) to an old dry creek. Turn left at this creek until you come to an old grown-over cow trail. You will be going down this creek. At the cow trail, cross the creek and follow the this cow trail, with the mountain at your right, until it plays out near a dogwood tree that has been cut down and left hanging about three or four feet high from the ground. Take the left end of this trail, cross the creek with water in it, go up the creek until you see another trail. Leave the creek to your right. You will come to a dry creek bed or small canyon (arroyo), and in this canyon you will find a large rock with an arrow cut on it. Climb over this rock and keep up the canyon for about 400 yards with the mountain on your left. There, look for a big rock on which is cut a turkey foot with a nail, and here look east for three small red oak trees (probably grown by now) in which you will find three bullet holes in one of them. One of the trees also has a black knothole in it. Just back of these trees is a big cliff or a bridge-like ledge with three cracks running across it. The money is jammed into one of the cracks with a small rock hammered in on top of it, wrapped in a red saddle blanket and a yellow slicker.
This cache has never been reported found, and all indications point to the fact that it is still there, somewhere near Rattan, Oklahoma."