There are three books that make up Original Dungeons & Dragons. Book 2: Monsters and Treasure, as the name implies, is all about monsters and treasure. OD&D isn’t a particularly mechanically complex game, so monsters can be described quite simply, mostly via prose rather than complex stat blocks. As monster manuals go this one is a bit all over the place. Some monsters have a brief description. Others ask you to look things up in Chainmail and make some corrections. Many simply suggest some...