Review: Although, this is a small work, with beautiful illustrations, it is chock full of information. I have never read a book that was so informative historically and able to connect so accurately to a work of literature's settings and characters. I wish all my students could own this book when we read Of Mice and Men.
Here are a few good websites to check out, if you are a teacher or just a lover of Steinbeck:
http://www.steinbeck.sjsu.edu/
http://www.brainyquote.com/quotes/authors/j/john_steinbeck.html