This is a site you an order books from and i have one or two books from them as well!
BUT you can get free samples of their books sent to your email! make a ton of brushes from their clips art its all royalty free images and clip arts!
http://store.doverpublications.com/index.html
click one of the links on the side and you will go to the email sign up and can look through at least one or two of their pages for each book!
http://www.doverpublications.com/ds014/index.html?s1=Dover-Yahoo%20Store&s2=Homepage&s5=sampler1
^^^^^ detect link to the free samples!
i just thought i was a good site to share even if you don't want to buy a book
enjoy!