I am currently reading Wildwood written by Colin Meloy and illustrated by Carson Ellis. So far there are three books in the series and are all full of beautiful illustrations and tales of the impassable wilderness in Portland. We have bought two of her prints and have them on display in our tiny lounge room. You can buy her prints from here or here. Here is a link to her tumblr, her website and the Wildwood website. See a great little video of them both chatting about the books here. The video features a wonderful illustration lesson from Carson herself. Also here is a nice little write up about her.
See some of her fanciful illustrations below!