Does anyone know of a (relatively) cheap astronomy book which has Ceres officially labelled as a planet? I realize it may not be extremely cheap seeing that it would have to be from the 1800s, but perhaps there's one that was commonly enough in print to not be so hard to find? It's both useful as something to show people in helping them to understand why Pluto is no longer a planet and it would just be fun to own such a book. If there's a free PDF version of such a book online, that would be great to know about as well, but a physical copy would be best. Thanks!