Thank god for wookiepedia, please try the following link and you can find pictures of the various ships mentioned in the Beta book.
With all credit and then some to Wookiepedia, I was really wondering what all those ships looked like and didn't even know a few were shown as easter eggs in the Firefly tv series!
I did think to add this to the "what starships are there in the book" thread but I believe keeping it separate would be a better idea than diverting the intent of that thread.
Now I hope I didn't mess up!