Stealing a thought line from the author, Ken Jennings, Jeopardy superstar, if you the type of person who walks into a room with a map hanging on the wall and you immediately head to the map...you must read this book. I love maps, all kinds and found this book to be utterly fascinating. So, if blue was favorite category in Trivial Pursuit and you often find yourself exploring the world via Google Earth and its maps, then you, Ken Jennings and I have something in common and this book, while it doesn't tell us why, it does fill a niche of knowledge about the passion we share. Some may wonder if it's really possible to have an entire book "about" maps. YES it is...thank goodness.