I found Xu's Drawing in the Digital Age to be an interesting counterpart.
I also like Drawing on the Right Side... but note:
"a meta-review of the laterality of creative processes conducted by Dietrich and Kanso (2010) found no evidence that the right and left brain hemispheres contribute differently to creativity. Furthermore, the idea that drawing upside-down objects, including faces, leads to more accurate depictions has not been supported scientifically."
(Really amazing book, teaches a different way of thinking though the mode of drawing)