Acoustic Day-to-Day Resource
http://www.guitartips.addr.com

Q. How can I identify my guitar in case of it getting stolen?

A. Of course the first thing to do is record the serial number somewhere and save it but on top of that, write your name, address, and phone number on a stick-on address label and then stick the label inside the guitar attached to the top. No one will see it unless you instruct them where to look with a mirror.