Unique Wall Art

I stumbled across this photo on pinterest (imagine that...I swear that website is soooo addicting) and I thought to myself "wow, what a cool idea, where can I get an old envelope preferably written by one of my grandparents" to enlarge and frame.  I think it was originally from a feature of a "bachelor pad" in Southern Living magazine and I just love it.  Imagine all the possibilities, the history behind it and the conversation starter it would be.  So I am off on a hunt to find an old envelope to try and do this to, and by hunt I mean call my mom and ask her to look for something. :)