This is Helen's out-of-print first sketchbook limited to 500 copies.
Mingue Helen Chen is a Visual Development artist at Paramount, formerly at Disney Feature Animation (Wreck-it Ralph, Paperman, Frankenweenie), and a graduate of Academy of Art University in SF.
This sketchbook contains a lot of her sketches and personal works. Lovely stuff.
View Helen's flip-thru here: http://instagram.com/p/eNws6RoZVE