This is a reference book for The League of Extraordinary Gentlemen, Vol. 2. It helps the reader to identify the characters and references in the comic book. For example, it will tell you who John Carter and Gullivar Jones are, and will even identify all the different races of Martians and tell you what books they came from. Where this book comes in most handy is in regards to "The New Traveller's Almanac", which is a sort of travelogue about the League's world. The Almanac describes hundreds of fictional locations that exist in the League's world, very few of which the average reader will have heard of. Sure, everyone has heard of Lilliput, but who ever heard of Calejava? Jess Nevins, that's who. This book will identify the literary source of Calejava and practically every other location mentioned here (there are a handful that he was unable to identify). The book also has interviews with League writer Alan Moore and League artist Kevin O'Neill. This is an excellent reference book for fans of The League of Extraordinary Gentlemen.