On the AP-Psych listserv, the question was asked as to what psychology books we would recommend for a school to add to its own library. I find this to be a fascinating question. I have my own favorites which I will add later, but please take a moment to add your own idea(s) in the comments. If I were to add one, this one would be it.
There are many, many more, but this is my current first choice.