Lost States is a book of Strange Maps; specifically, it’s a collection of some of the almost-states that have been proposed in American history, with maps of how they might have looked. I liked reading it, being a sucker for Strange Maps, and there were a bunch of Lost States in there that I never heard of. Fair warning, though: the author demonstrates from time to time a mild (and increasingly dated) irritation towards George W Bush. Never enough to make me stop reading, but I was rolling my eyes from time to time.
Still, check it out. The cover unfolds out to a suitable-for-framing wall map!