Winnie-the-Pooh and The House at Pooh Corner by A.A. Milne
I read the Winnie the Pooh books to my 2-year-old before nap time every day in an attempt to make the nap more palatable to her. It didn't really work, but I loved these stories. I had never read them before, and they are delightful. Eeyore has always been my favorite character in the Disney version, and I was surprised to find that his pessimism is much, much worse in the books. He is ridiculously pessimistic, and I thought he was hilarious. I highly recommend them.