This is not as impressive of a work as his previous Batman Encyclopedia. The main reason? It is dated. I know that I said the same about the other book, but this one would have been dated when it was published. For some reason, he focused mainly on the Golden Age stories, and current information can really only be found in the entry on Wonder Woman herself. Why is this? Even with the television show, her heyday would have been over by this time, so including more current information would not have made this much thicker, as she was really only appearing regularly in her own book and the Justice League, unlike Batman and Superman who were in multiple books. And Wonder Woman didn't have a large family of characters who also had published adventures like the two male contemporaries, again making it curious that they couldn't find room to include the current information.
It is an impressive treasure trove of information about her Golden age adventures, and the entry on Wonder Woman herself is very good, even delving in to her psychology. But this doesn't make up for its instant datedness. A shame. With just a little more effort this could have been as interesting of a book as its predicessor. ( )