300 years later, letter still sparks dreams of treasure

A letter written 300 years ago this month and currently located at the Historical Society of Pennsylvania in Philadelphia details the location of buried treasure, presumably pirates' treasure.

There's an interesting story in PhillyVoice about the letter, and the Historical Society had a piece on it on its Hidden Histories blog.

It's fascinating to wonder if any letters written today will still be around in 300 years.