GSFirefly and RLDrosophila, thank you for the tribute cache! That was very sweet! You inspired me on the same day to put out my first-ever LBH. I've been waiting for an appropriate time and place to hide my first one, so I guess there's no time like the present! Thank you for your friendship!
This is a Letterbox Hybrid Cache.
A letterbox is another form of treasure hunting using clues instead of coordinates. Once a letterbox is found, you place your stamp mark in the letterbox's log book and place the letterbox's stamp mark in your own log book.
A letterbox hybrid has coordinates, making it a letterbox and a geocache. You can put your stamp mark in the geocache logbook and get the cache's stamp mark in your own personal log book as in letterboxing, or you can simply sign the log book as in geocaching, or both. Many cachers have a special book just to collect the stamp marks from all the hybrid caches that they find.
This letterbox hybrid contains a traditional log and a pencil.
There is also a stamp. The stamp inside a Letterbox Hybrid is not intended to be a trade item; the stamp and ink pad are meant to remain in the box so that visitors can use them to record their visit. PLEASE LEAVE THE STAMP IN THE CACHE!!
BRING YOUR OWN INKPAD IF YOU PLAN TO SWAP STAMP MARKS.
To read more about letterboxing, visit the Letterboxing North America web site.