Here are some books that I like:
Serafina and the black cloak.
The new transformers and gi-joe comics are pretty good, transformers has alot of similarities to wc.
wolverine comics are good for yellowfang fans such as myself.
hitch hikers guide to the universe is a adult book and has NO connection to wc whatsoever, but its one of my favorite books.
also, erm, history books- AHHHHHHHHHHH *GETS THROWN OUT THE WINDOW*
