And here's your sign! "Mission Roswell", LbNA # 67202. (From a LbNA search: http://www.letterboxing.org/BoxView.php?boxnum=67202 ).

Now, go find that 'box!

Regards,
Connfederate
Who would go out for it, if I lived closer to GZ. YMMV, and invariably will...

I did go look for it in the last year, but it is not there. I live an hour away. If you want to replant it, I can do that for you.