Thread title is the name of an excellent book I just finished reading. It is a history of the St Louis Zoo (Missouri, USA). Very nicely illustrated, with a hard cover and large size - basically a coffee table book. Good, easy to read text - nothing too in-depth, but just enough for a good overview. (Perhaps ZooChatters would like a bit more, but I think you would still find it enjoyable). Good mix of historical photos and current photos. If you have been to the zoo (as I have), it is even better, but I think any zoo lover would enjoy this book.