This is probably the best thing to ever buy a firefly fan!! It's the official firefly companions vol 1. and vol 2., plus Joss Whedon's "Keep Flying" bound in a beautiful leather binding. There is also a pocket in the back full of beautiful pictures of each cast member!

You can read more about it here: http://www.amazon.com/Firefly-Celebration-Anniversary-Joss-Whedon/dp/1781161682/