I love Suessland.com! They have everything Seuss, and seem like such a great company. There is a page on their site called
Why You Should Buy From Us, and I really like their policies, such as shipping the very next day and answering all their own phones. I can't wait to recieve my Cat in the Hat Lesson Plan Book! (Yes, you're right, I do teach middle school, but Dr. Seuss has no age limit!)