Newest/best City of Rocks guidebook(s)?

We've never been to City of Rocks before - going there near the end of April. I have the 2009 guidebook by Dave Bingham. Are there any other guidebooks for the area that are worth checking out?

As far as I know thats the best book for the city. It's a bit lacking in route specific beta but it has a great number of routes and many useful maps, so who could complain?

OK, good to know.

Thanks

MP has a ton of great information on the City. If you get the guide book and peruse this site you will do really well. It is a magical place.
Dallen