So, back when people read books, fantasy novels had a nasty habit of laying out a few pages of maps at their beginnings. While useful in helping the reader visualize the world, I’m thinking they were more to establish a history and life of the world in the author’s head. After that’s established, you have these maps and histories kicking around so why not publish them?
See also: every Tolkien book that isn’t The Lord of the Rings or The Hobbit.
