The following is a letter found in the belongings of the famous Caribbean pirate Captain Blackbeard.

Ahoy to me hearty mate Blackbeard!

Do ye remember when ye says to me that I would never be more than a stinking bilge rat? Well avast yerself and listen smartly! Git yer hornpipe out and yer grog, ready yer sailors and sail the Arkansas river fer the town of Fayetteville!

Me sawbones tells me I ain't long for the world, and nothing rips the heart from me putrid soul more than thinking of me treasure rotting in the woods.So, I says to meself I'm going to give that rotten land lubbing scoundrell Blackbeard directions to me treasure so he will eat his words when he called me a stinking bilge rat. 

Now be so as it may be, I am not about to make it easy on the swill who called me names. So, head to these coordinates and feast yer eyes upon me glorious bounty! But if you want to actualy open me bounty, you'll have to find me key!

50 paces at 325 degrees northwest, ye will see a fence post thrice ways leaning into a point. Follow the metal south into the ground. 

Regards,

Captain Wrenthrow