A person I work with introduced me to Henry Darger a few weeks ago. He was an artist that lived in Chicago from about 1890 till the mid 1970s. He is a great example of the "Outsider Art" genre. He also wrote a book entitled: The Story of the Vivian Girls, in What Is Known as the Realms of the Unreal, of the Glandeco-Angelinnian War Storm, Caused by the Child Slave Rebellion, which is over 15,000 pages long. That's right 15,000 pages!!!
Here's a link to some of his paintings, check them out he is a really interesting guy.
I also wonder if you can purchase his book. I can't find it on Amazon.com at all.