Ace character designer Nico Marlet (Kung Fu Panda, How To Train Your Dragon) has published a collection of his sketches. As of now, the only place I’m aware of that stocks the book is the Gallery Nucleus website. I got to meet Marlet briefly last month, but sadly, I was a couple days too early to get a finished copy of the book. He made up for it by allowing me to flip through some of his designs, which I have to say are something else entirely in their original unreproduced form. Unlike many artist sketchbooks, Marlet didn’t curate a selection of his best work; rather, he took one of his sketchbooks and reprinted it whole from cover to cover. If the preview images on the Gallery Nucleus site don’t make it evident, there’s likely not a weak drawing in the entire book.
UPDATE: The item appears to be back in stock on the Gallery Nucleus website.