Here is a nice book that is in the public domain called "The letters of a post-impressionist" by Vincent Van Gogh. You can find it in the Sony book store in EPUB format under Google books ( Barnes and Nobles also has it for free). Or download the PDF from Google books. Some say Van Gogh wrote almost 1,000 letters and this reads almost like a diary and give a great insight into Van Gogh. Several "table of content" links shows pictures of his art work at the top of each page.
Michelle