Check out Steven Barrett's book "Hidden Mickeys: A Field Guide to Walt Disney World's Best Kept Secrets." Also, he has a website
http://www.hiddenmickeysguide.com/.
The website and book are both organized by park. The book does not have pictures, but the website does.
You will see some of the exact pictures from this thread on the site. I think I can pick out a couple regular posters on this thread who have also sent pictures in to Steven Barrett's site.
<cough> Indyjammer <cough>