"Rubbed" Distress Pattern

I'm trying to create a distress pattern where it looks as though the ink has been worn or rubbed off, like this;

http://www.yellowstonenationalparklodges.com/shop/product-view-0s-7c-48i.html

I've tried creating one in Corel, but they all end up more as a splattered look, not this subtle. Does anyone have any tips or ideas (or templates) to create this look?