J6Studios… you beat me to it! 
I was going to post about the new Koos Eissen book too!
Well, how about this new book? Have you heard of it. I just got it a few weeks ago and it is FANTASTIC! http://www.gordonharris.co.nz/sketches-p-50272.html
http://www.laobuke.com/goods.php?id=272
It’s mostly pen/pencil line drawings, but it still is simply marvelous to look at and get inspiration from. It’s a collection of the designer, Jordi Mila’s work. I got it I believe on Amazon UK, but Amazon US doesn’t seem to have it, I think. You can check.
Here is a link to an interview I found with this designer, Jordi.