I own a huge library of books on innovation. Mostly hardcover. The $27.95 variety with big indexes and forwards by people who make more money than I do.
Some of these books are actually good. Most of them bore me. (I must confess I have a secret desire, whenever I enter a bookstore, to put glue between pages 187 & 188 in all of the new releases just to see if the publishers get any complaints).