I always visit Trader John's Book & Record Exchange when I go to the area. It is a place where you can find many used books. The inside of the store is a little bit messy though, and you may have finding hard time what you are looking for. But when you ask the owner he will immediately take you to the books that are about the subject you are looking for. If you are someone who is concerned about the environment and don't want more trees to be cut to be turned into books, this used book store is a great place for you to shop at very affordable prices.