Illustrators Gift List

I am compiling a list of must have books for illustrators for the holidays. Any ideas? Feel free to add to this post:

I am starting with:

Color and Light: A Guide for the Realist Painter 

by James Gurney 

http://www.amazon.com/Color-Light-Guide-Realist-Painter/dp/0740797719/ref=sr_1_1?ie=UTF8&qid=1322589721&sr=8-1

Imaginative Realism: How to Paint What Doesn't Exist

by James Gurney 

http://www.amazon.com/Imaginative-Realism-Paint-Doesnt-Exist/dp/0740785508/ref=sr_1_2?ie=UTF8&qid=1322589721&sr=8-2

Understanding Comics: The Invisible Art 

by Scott McCloud

http://www.amazon.com/Understanding-Comics-Invisible-Scott-Mccloud/dp/006097625X/ref=sr_1_1?s=books&ie=UTF8&qid=1322590027&sr=1-1 

 The Mad Art of Caricature!

by Tom Richmond 

http://www.deadlinedemon.com/