It's Sybex. I have it sitting on my lap right now.
Nothing super special (got it mostly for reference when/if I novelized FS2). Mentions Ground Freespace and Planet Freespace in one part. Some "combat tactics" (not sure if they're useful, didn't really pay attention). Some multiplayer and FRED stuff, and of course, a campaign walkthrough. Nothing spectacular (pretty black and white pictures aside).
Not worth the time anymore, but when I got it, it was worth it.
I also have the guide for FS1. Inferior to the FS2 guide in everyway, even has an outright error in one mission (claims the ship facing off against the Bastion in Clash of the Titans is a Cain, imagine my surprise to find out it was a damn Demon!).