All drawings with the exception of the Clursadar are on Moleskine Art Sketch paper cut from my sketchbook 8.25″ x 11.625″. Clursadar is on a bristol board 9″x 12″. These are $50/per drawing add on. Each is the original drawing that was used as the basis for the digital illustration that is in the book. Click on the image to see a larger version.